Science topic
Hair - Science topic
A filament-like structure consisting of a shaft which projects to the surface of the SKIN from a root which is softer than the shaft and lodges in the cavity of a HAIR FOLLICLE. It is found on most surfaces of the body.
Questions related to Hair
Humorous Names in Sandra Cisneros’s The House on Mango Street
The House on Mango Streetis a series of vignettes about a young girl growing up in the Latino section of Chicago. The people who live on Mango Street tend to have ethnic surnames like Cordero, Guerrero, Ortiz and Vargas. And they tend to have ethnic first names like Alfredo, Alicia, Alma, Angel, Angelo, Armando, Blanca, Elenita, Geraldo, Izaura, Jose, Marco, Marin, Mario, Noreida, Rafaela, Raul, Refugia, Renaldo, Rosa, Tito, Yolanda, Aunt Lupe and Uncle Nacho.
“Everybody in our family has different hair. My Papa’s hair is like a broom, all up in the air. And me, my hair is lazy…. Carlos’ hair is thick and straight…. Nenny’s hair is slippery…. And Kiki, who is the youngest, has hair like fur. But my mother’s hair, my mother’s hair, like little rosettes…smells like bread.”
The narrator’s name is Esperanza Cordero. “In English my name means hope. In Spanish it means too many letters. It means sadness, it means waiting. It is like the number nine. A muddy color. It is the Mexican records my father plays on Sunday mornings when he is shaving, songs like sobbing.” “At school they say my name funny as if the syllables were made out of tin and hurt the roof of your mouth.” “But in Spanish my name is made out of a softer something, like silver, not quite as thick as sister’s name—Magdalena—which is uglier than mine. Magdalena who at least can come home and become Nenny. But I am always Esperanza.”
“I would like to baptize myself under a new name, a name more like the real me, the one nobody sees.” “Esperanza is Lisandra or Maritza or Zeze the X. Yes. Something like Zeze the X will do.”
Dance Parlors have names, and dances have names, but Geraldo has No Last Name. Marin met Geraldo at a dance. “She’d be the last one to see him alive. An accident, don’t you know. Hit-and-run. Marin, she goes to all those dances. Uptown. Logan. Embassy. Palmer. Aragon. Fontana. The Manor. She likes to dance. She knows how to do cumbias and salsas and rancheras even. And he was just someone she danced with.” “They never knew about the two-room flats and sleeping rooms he rented, the weekly money orders sent home, the currency exchange. How could they?” “His name was Geraldo. And his home is in another country. The ones he left behind are far away, will wonder, shrug, remember. Geraldo—he went north…we never heard from him again.”
Star Trek: A Study in Ethnic Diversity:
In 1964, Gene Roddenberry wrote a proposal for a science-fiction series. The proposal was influenced both by Jonathan Swift’s Gulliver’s Travels and by the popularity of TV Westerns. Roddenberry’s series was to be both a morality tale and an adventure story, and it was to be named Wagon Train to the Stars. The name was later changed to Star Trek based on the earlier pioneer “trekkers.” Star Trek fans are now called Trekkies, or Trekkers. The original Star Trek featured the galactic adventures of Captain James T. Kirk and the crew of the starship Enterpriseas they explored the “United Federation of Planets” during the 23rdcentury.
Star Trek was designed to take on such controversies as war and peace, personal loyalty, authoritarianism, imperialism, class warfare, racism, religion, human rights sexism, and the intergalactic role of economics and technology. William Shatner said that science fiction is like religion in that it tries to explain the inexplicable. In Star Trek, technology and diversity are valued rather than feared, and people work together for the greater good.
Incongruity and Incongruity-Resolution is one of the most recurring themes in humor theory. All of the Alien species in Star Trekare almost human, but not quite. They might have antlers, or pig snouts, or furrowed foreheads, or big brains, or they might even be part human and part machine. And they might be green, or blue with white hair, or have other deviations from human appearances. And the behaviors of Aliens, like their appearances, are both human and non human. They are incongruous (non-human), but their incongruity is close enough to being human that we can easily identify with them. Star Trek Aliens are like “funny” humans. But their “funniness” should not hide the fact that they can be super-logical, super-objective, super-sexual or super-dangerous. Even these hyperbolic attributes can be a bit humorous.
Star Trek is about boldly going where no one has ever gone before, but it is also about how humans ineract with the various ethnic identities that they meet in outer space. Andorians have antennas, blue skin, and white hair. (Cy)Borgs are part machine and part human. They have a “hive” mentality. Susanna Thompson is the (Cy)Borg Queen. Species 8472 communicate telepathically. The Borgs want to assimilate them,
but they are immune to the Borg’s attempts to do so. The Cardassians believe in expansion of the Federation. Gul Dukak is a Cardassian. Armin Shimerman is a Ferengi named Quark. Sofia Boutella is a Jayla. Abd Deep Roy is a Keenser.
The Klingons are belligerent warriors, but one Klingon is member of the crew of the Starship Enterprise. His name is Worf. Krall was the captain of the Starship Franklin. When it crashed into a planet, Krall and his crew felt that they were abandoned by the Federation. The green-skinned Orion humanoid women seem to be slaves,
but in truth, their dancing girations have a powerful influence over human males. The Romulans are a splinter group that broke off from the Vulcans. Unlike the other Vulcans, the Romulans refuse to suppress their emotions. Kirstie Allie plays a Vulcan named Saavic in Star Wars. Leonard Nemoy plays Spock, a Vulcan member of the crew of the Starship Enterprise. He knows the Vulcan nerve pinch, and the Vulcan finger signal, He also has the Vulcan ears. His motto is, “Live long and prosper.”
I have a doubt. I am analyzing wastewater from the first stage of tannery process (known as "hair").
Why DQO is increasing after the bioremediation with bacteria?
Both Europeans and Yacuruna arrived in Peru via water, are comparatively hairier than indigenous Peruvians. Both Europeans and Yacuruna also have harmed the Incans.
Olive oil and garlic are not typically considered causes of hair loss. In fact, olive oil is often used in hair care for its moisturizing properties, and garlic is sometimes believed to promote hair growth due to its potential to improve circulation and provide nutrients to the hair follicles. However, if you have a specific sensitivity or allergy to these ingredients, they could potentially cause scalp irritation, but this is rare. Always do a patch test before using any new hair care products to check for adverse reactions.
I need to know how to store Arabidopsis roots for further analysis in a way that hair roots are preserved in their integrity, without degrading or collapsing, suffering from dehydration, etc.
I will have too many hydroponic samples to analyse in a single day.
Therefore, I must store the samples to analyse them later on.
Only morphology interests me, not celular contents.
It would be very useful to have a reference, focused in Arabidopsis hair roots.
Many thanks in advance!
Would you please let me to know about the methods for measurement of medullation and Kemp % on animal?
My problem is that the wool sampling and sending to laboratory is not possible. So I would like to verify the possibility of a method to measure Kemp/medullation % in wool rapidly on the animal. I know "Benzene test" (attached file) for distinguishing of Kemp fibers, but Benzene is a risky material. Furthermore the use of portable OFDA in our situation is not possible.
Is there safe substance similar to benzene that has the similar optical refractive index ? Which safe liquid can be found that has a light refractive index similar to wool? (1.54).
Sincerely,
Where can I find pigmented short hair guinea pigs for laboratory? Do you know any sellers?
While «hair growth» is an extremely popular item. On February 12, 2013, there were
61,600,000 hits via Google and there were 70,400,000 hits on July 11, 2013?
The interest grows on the web as the number of citations has increased over 13% in less than half a year). The claims on improving growth are quite numerous and barely documented. In contrast, the evidence based information about human hair growth in terms of «dynamics of hair fibre elongation over time» remains surprisingly rare if not completely dismissed in the adverts with a smell of trichoquackery....
Who think that I was right in trying to alert the scientific community about extremenly fats augmentation of HITS containing distorted and pseudo-information on the web?
By analogy marketing ads tell you that "shoe-shine nurters your shoes"...?
Hello everyone
I am using a vacuum arc furnace to prepare alloys containing magnesium, but the magnesium raw materials quickly oxidize in air atmosphere before I place them in the furnace. The magnesium raw materials are cubes with a side length of approximately 10~20 mm, with a purity of 99.95%.
I use 5~10 g of magnesium every time. My process for handling these raw materials is as follows:
1. Remove oxides from each surface of raw materials using 400 and 800 grit sandpapers.
2. Clean the surface of raw materials with industrial ethanol.
3. Dry the surface of raw materials with a hair dryer but without heating.
4. Weighing the raw materials with an analytical balance. If the raw materials are overweight, I will repeat the above steps.
5. Put the raw materials into the furnace and turn on the air pump immediately.
6. The general operating process of a vacuum arc furnace, which involves three rounds of air extraction and filling with high-purity argon gas.
Other metal elements, such as copper and yttrium, in those raw materials are relatively inactive, and I processed the magnesium finally.
But even if I complete the entire process within 3 minutes, severe oxidation will still occur, leading to poor fluidity of the melted magnesium and experimental failure.
There is no problem with the vacuum arc furnace because I can use it normally to make other alloys without active metal elements.
There is also no problem with the other materials, because I melted these metals separately, and only the surface of magnesium showed obvious oxide film and was difficult to flow.
I would like to know the method to prevent magnesium from being oxidized in the situation mentioned above, preferably without the need for a glove box or an isolator.
Thank you for following my question.
American Slang
Slang is constantly changing, and so is jargon. This is because both slang and jargon are used to determine which people can use it properly, and which people can’t. Slang is the colloquial language of the common people; jargon is the scientific language of professionals, but they are both used to determine who is “in” and who is “out” of particular groups. Here are some examples of slang:
For frustration:
• I hate when that happens.
• I’m having a bad hair day.
• What was I thinking?
•
For repetitions:
• Blah blah blah.
• Same old, same old.
• Yadda yadda yadda.
•
To express criticism or doubt:
• Excuse me!
• Hello!
• Duh!
• Eat my shorts!
• That’s so five minutes ago.
• You just don’t get it.
• That sucks
• Yea, Right.
• WTF
• I don’t think so.
• Get over it.
• Sign L on forehead for Loser
• In your worst nightmare.
• Don’t go there!
• As if …
• Like…
• Puh…leez
• That blows!
• …Just sayin’
Other examples:
• Been there. Done that.
• He’s history.
• The bottom line.
• Chill out!
• Go for it.
• That’s hot.
• To dis someone.
• To push someone’s buttons.
• Under the radar
• 24/7
• Do the math.
• Gimme a break!
How important is slang and jargon in English and other languages?
I can't take good pictures of the cheliceral denticles if the hairs are present.
What do you think are the factors that have depressed this generation?
Why do you think it's hard for them to open up to others when it comes to telling how they feel?
The deterioration of mental health is practically notorious in Generation Z.
There are many young people today who do not share their problems and decide to deal with them alone.
The truth is that there is more and more use of antidepressants, more assistance to psychological therapy and more self-reported expression of anxiety and sadness in these generations.
List of some of the things that some people tend to do when they feel bad : listen to music, take refuge in drugs, buy clothes, dye your hair, don't eat, insomnia, etc.
Hi, recently i did an analysis on 2 hair samples to try and detect alcohol (or ethylglucuronide). This is the protocol i followed. I used HPLC and did not get any results. The machine was capable to detect another persons alcohol in hair analysis but not mine. This person used another protocol to extract the ethylglucuronide so I think I went wrong with the method but I don't know where the error lies.
The phrase 'mulata toribia' refers specifically to Encarnación Ezcurra de Rosas, the wife of the notorious dictator, Juan Manuel de Rosas. It was used as an insult by her enemies, the Unitarians. 'Mulata' refers to her dark hair and skin but 'toribia' is not as easy to define. I have looked at some explanations suggesting that it means 'controlling', 'domineering', 'spiritually aware', 'intelligent' and 'determined', but I am unsure as to whether any of these translations are accurate. Any further advice on this matter would be much appreciated. Thank you.
I would greatly appreciate an expertise.
Hair 2017, says "Values above 0.90 (and definitely above 0.95) are not desirable because they indicate that all the indicator variables are measuring the same phenomenon and are therefore not likely to be a valid measure of the construct"
Whereas, following discussion says 0.9 is acceptable unless items are not repeating and calls data as highly reliable.
May i know any literature to justify composite reliability ranging between 0.9 to 0.95 ?
It is a variant of alopecia areata. Is it somewhat similar with Marie Antoinette Syndrome?
Hi all!
Please could someone tell me what is this structure that stains PGP9.5- positive on a hair in rat skin? (see picture)
I am new to skin morphology and textures, and even though I am starting to understand the pattern of innervation, I found a structure that is unfamiliar with me.
It looks like cells with some kind of extended structures / axons? But I do not know of any neuronal cell type that surrounds the hair? It looks like a pericyte but it can't be.
The picture is of Rat dorsal skin, blue = dapi/autofluorescence, green = pgp9.5 (or cell-specific autofluorescence ?)
Does anyone have an idea? Schwann cells?
Hello and good day!
As could be seen in the attached PLS graph, I am trying to construct a manifest variable namely PPB (Privacy Protecting Behavior). The data we gathered for this variable has been binary (7 items) taken from the settings of the social media users and not from the survey. As I searched the literature on PLS, we can use almost all data types in our model. However, I failed to understand the mechanism underlying the drawing of this variable. In the Lavaan package of R and Amos as well, it is possible to draw manifests as rectangles having no circular shape.
My specific question is how we should treat manifest variables when drawing a model in the SmartPLS? Hair et al (2019) showed that we can use PLS for measuring binary manifest variables as outputs. I would be really grateful if you let me know how I can overcome this challenge. I searched a lot on the internet, but there was no specific answer, especially on drawing the manifest variables.
Hi! I am looking for some practical help and ideas. I'm trying to grind hair samples prior to cortisol extraction and quantification but am having some difficulty.
I have tried cutting the dry hair with scissors to a uniform size however found this very difficult and messy.
I have also tried grinding it into a powder using a pestle and mortar but could smell burning hair (!) which I am concerned will cause cortisol degradation. Also encountered a lot of static which made the sample difficult to handle without losing a significant mass to surfaces/implements - I want to extract cortisol from the same mass of hair every time, so will be weighing samples prior to cortisol extraction. Any ideas on how I could disrupt this static without affecting mass overall?
If anyone has any techniques they could recommend using common lab equipment I would be very grateful to hear! Thank you
This is an example of the type of section I'd be analyzing. They contain hair shafts that may be detected by the software. Have any of you done analyses using QuPath on this type of sample? What settings do you use to get around this issue.
I have to write on this topic for the Safer Consumer Products Program.
Hi, Can I use the same kit (Salivary cortisol kit, Salimetrics assay) to measure the cortisol level of saliva and hair?
I want free dataset to practice SEM. I am particularly interested in HBAT dataset given in hair's book so that i can try my hands and relate to interpretations. Also, if anyone knows any other data set with theoretical notes, it would be helpful. I only need dataset for which corresponding interpretation is also given. If anyone can pls suggest me a link or source, it will be great. I am looking for free source.
In traditional medicine, some material, such as proper mineral can bleach teeth and some are consumed to darken hair. we need some organic composition( name of material/ plant) for changing skin color and evaluation of mechanism. do you know any? thanks a lot
Hello everyone, I really need helps for my analysis.
I had four constructs with a total of 60 items; TM (10 items), WE (9 items) and SL (38 items) and TOI (3 items). When I ran the analysis, three of my constructs shown low AVE; which TM, WE and SL. I deleted the items with poor outer loadings. It required me to delete up to 7 items for TM and 5 items for WE. Meanwhile, my Self-leadership construct with 38 items shown the lowest among other construct (AVE=0.189). I have to delete almost 33 items to improve the AVE up to 0.5. Hair also highlighted that we could not delete our items more than 20% of the model. I had tried several solutions whereby I treated the SL construct as higher order and constructed it into 11 dimensions. Unfortunately, the AVE still showing low value until I have to delete almost ¾ of my items.
Thus, I am humbly seek your kind advise how I can fix my analysis
Hi all,
1. Hair, Howard, and Nitzi(2020) have mentioned the "predictive validity" step for the formative model PLS-SEM. How should I calculate this? Can you tell me step by step process to calculate predictive validity?
Hair Jr, J. F., Howard, M. C., & Nitzl, C. (2020). Assessing measurement model quality in PLS-SEM using confirmatory composite analysis. Journal of Business Research, 109, 101-110.
2. Also, all my exogenous and endogenous constructs are formative but control variables are single-item(Actually, the item itself is the variable). Should I take the control variables as reflective or formative?
We are preparing to run an experiment measuring heart rate variability and cardiac impedance using pre-gelled electrodes. We will be running both males and females and are concerned about good dermal contact. I have not seen this issue addressed in the methods sections of the research articles that I have read.
I am aware of a study that has compared the use of citrated and defibrinated sheep's blood in microbiological media ( ), but can anyone tell me if sheep blood prepared in Alsever solution interferes with any microbiological diagnostic tests?
Thank you for your input.
Since tween 20 is no doubt an excellent surfactant to remove surface tension and provide better exposure of plant surface for sterilization, by removing the bubbles which are more problematic in case of plants having plenty of hairs and trichomes. I wonder if in case of unavailability of tween 20, can a common detergent or dish soap provides the same benefit or there is any other cheaper compound as a replacement?
Dear Colleagues! How correct and appropriate is it to carry out a forensic toxicological examination of drugs and psychotropic substances in biological objects (in blood, urine, hair) and a chemical examination in different materials on one lC-MS device?
Or, what is the timeframe whereby the ingestion of elevated nutrient levels may show in hair analysis of humans or animals?
Is it safe to use nano materials in cosmetics ( nanocosmetics) ?
There is a widespread use of nanotechnology in the cosmetic industries such in nail, hair, lip, and skin care. For example hair care product includes shampoos, conditioning agents, and hair coloring. Zinc oxide and titanium dioxide nanoparticles for example are the most effective minerals being used in sunscreen products which protect the skin . Inhalation, dermal and ingestion routes are the possible routes by which humans can get exposure to the nanoparticles .
We are doing research with C57BL/6 mice to induce obesity using High-fat diet (D12492-60% kcal% fat).
After 2-week observation, the high-fat diet intake mice have a wavy hair problem and also sample treatment group showed the same. We are curious without any sample treatment mice also having a wavy hair problem.
Please help me out! Is there any problem with the high-fat diet or not?
I have to perform various tests on white hair that I get from a colleague. I would like to clean them before treatment and analysis but I do not know which method is the most effective without damaging the hair. I read that there are 2 stages. The first is to wash / rinse the hair with acetone or dichloromethane and second step: wash / rinse with water or methanol. Otherwise there are some who rinse with sodium lauryl sulphate. Do you have any advice?
Indian sub continent, female are keep their hair long- any scientific reason behind it?
If i have silicones, alcohol and gas in my hair spray do i still need to test it for microbes?
Greying of hair at an early age is a problem specially in Asian people. It has a great psychologic impact. It is not uncommon. We are facing the problem every now and then. Is there any way to prevent the greying of hair at the early ages of life?
According to Hair et al. not only parameters or observed items but also model complexity and number of constructs with communalities should be focused for sample size calculation. They mentioned that minimum sample size should be at least 500 if the model with large numbers of constructs (>7) and some with lower communalities and/or having fewer than three measured items.
Hair JF, Black WC, Babin BJ, Anderson RE. Structural equations modeling overview. Multivariate Data Analysis, 7th edition. United Kingdom: Prentice Hall PTR; 2013.
Hello,
I´d need help from any analytical chemist on RG that can point out what is the gold standard for the measurement of human hair pH.
If possible, I´d like to know the most accepted methodology (if published or patented, the better).
Thanks!
To all, how do we harvest hairs for transcriptome? For large root hairs, I presume, just put in liquid nitrogen and then inside a falcon tube shake it well to dislodge the frozen root hair? But what when we work with coleorhiza hairs on seeds? Any suggestions???
I have seen many experiments using a hair dryer on a polymeric jets that produces by electrospinning Technique. Does using a hair dryer help improve conductivity of conjugated polymers and how?
My question is something apart from the natural hair growth cycle from anagen to telogen phase and more about "length retention", i.e. the ability to grow the hair with minimal breakage and the need for cutting. What I understood from internet forums, African-descent hair textures are often susceptible to acquired distal trichorrhexis nodosa, split ends and mid-shaft split hairs, even though the curvature is looser than "Type 4" (for example, when a person is from mixed descent). I have understood that the degree of kinking (torsion twists) and the flatter cross-sectional shape also influence the resilience of the cuticles and the cortex. But there are also cases of African persons who are able to achieve very long hair (e.g. 90 cm/35 inch) without significant breakage.
Furthermore, I often see through social media platforms pictures/videos of Brazilian persons with tightly curled hair ("Type 3B" or "3C") who are able to grow their hair to great lengths, like 90 cm/35 inch and longer.
In a hypothetical experiment, do you think that having a patient soak their scalp in a solution suspected to have hair growth promoting effects would be more beneficial than simply applying the solution topically with a dropper or fingertips? Especially if the solution contained herbal or natural ingredients that would not cause harm if introduced into the bloodstream. Say for 10 minutes soaking time and submerging the head in a bowl shapped apparatus or container filled with the solution.
Please explain why or why not. Thank you.
Every time we turn on the television we see anti wrinkle creams, diets, fashion shows with models with impossible bodies, hair treatments, and that, little by little, is installed in our brain. They do not show us the reality: that wrinkles at a certain age are inevitable, that when we grow we get stretch marks and cellulite, that we have one breast bigger than another, that women can be as bare as men ...
And then we try to resemble those ideals that have sold us massively, and instead of seeing strangers those bodies passed by hundreds of advisors and operations, we see ours as rare.
How dangerous it is to spend more hours in front of the TV, than on the street, you don't know how much they can deceive us
A Bangladeshi girl of 10 years presents with scanty, thin, lusterless scalp hair. She borns of a non-consanguineous parents, Her nutrition status is below average. There was no improvement with Vitamins and minerals supplementation for 9 months. What could be the causes of these hair pattern?
Every time we turn on the television we see anti wrinkle creams, diets, fashion shows with models with impossible bodies, hair treatments, and that, little by little, is installed in our brain. They do not show us the reality: that wrinkles at a certain age are inevitable, that when we grow we get stretch marks and cellulite, that we have one breast bigger than another, that women can be as bare as men ...
And then we try to resemble those ideals that have sold us massively, and instead of seeing strangers those bodies passed by hundreds of advisors and operations, we see ours as rare.
How dangerous it is to spend more hours in front of the TV, than on the street, you don't know how much they can deceive us
I have tried to compute sample size with G*Power but I cannot get the results indicated in the table 1.7 of the book by Hair et al. A Primer on PLS-SEM. Have you tried to check this ? Have you get the same sample size ?
Moreover, there is no indication in the book by Hair et al. on the direction of the test...
We examined a case of scalp psoriasis. The patient gave history of using dye for the past several years. The patient was presented with scalp psoriasis. He was free of the symptoms in a period of 6 months following healthy life style and use of Wrightia tinctoria extract: and was advised not to use hair dyes. After 18 months he used hair for the scalp. This was followed by development of psoriasis lesions on the scalp. He was treated and got cured of the condition.
+1
Silicon is widely available in the crest of earth and good to health,essential element for the life of all of living creatures. People, animals and even plants need this element. As for human beings, it plays a role in the formation of bone and connective tissue, enhances calcium and other minerals settling on bone tissue. In addition to this, silicon helps improve skin, hair, nail problems, amongst others.
It is important to emphasize that not all silicon forms are easily assimilated. Silicon must be found stabilized with marine collagen in the form of orthosilicic acid. This form can be perfectly absorbed and, consequently, with a higher bioavailability.
There are other silicon sources which are allowed and legal in Europe, such as silicon dioxide, silicic acid or vegetable sources as horsetail and bamboo; they appear as very unstable forms and are not easily absorbed.
The lack of silicon results in grooved nails, brittle hair or small scales in skin.
The lack of silicon can lead to skin problems, weak bones, hair loss and even cardiovascular disorders and arthritis.
Vegetables are the food products with the highest silicon content in a natural way. Plants and animals living into the sea absorb silicon naturally so that they can build and regenerate their cell walls. As vegetables like spinach do not need to be refined or processed like meat and cereals, they include the highest silicon and water content. so why we still need silicon?
could you help me with this?
I work on Tetranychoidea superfamily and I have some species with three pairs of setae h1-3, empudium a single claw-like structure but appendand hairs present.
is it Sonotetranychus?
My species similar to Sonotetranychus kermanensis but my species can be distinguished from S. kermanensis by striae between dorsal opisthosomal setae e1 transverse (inverted V-shape in S. kermanensis)
!. I know salivary cortisol varies dirunally, would need to be done within 45 minutes of waking up
2. Urine other renal issues may affect
3. Blood vaires by time of day is measuring the free component
4. Hair appears quite stable provided I cut the right length.
Hair is considered a body part, what precautions or statements within my consent would I need to write in??
The mind wanders and the body? Are there activities that are associated to mind wandering?
Here is a potential list.
· Doodling.
· Colouring in.
· Walking and other sports such as running where attention is not the main focus.
· Kicking stones.
· Sky gazing.
· Hair twitching.
· Flying a kite.
My 3.5 years old aged boy is so scared when I try to go to Saloon for hair cut. He cries a lot and says that he will not go to saloon. Even if I try own by trimmer or scissor he also denied. So its my great problem and I am also tensed. In this time what should I do? My wife says to go to hospital for consultation with the doctor. Please suggest me.
The outer loading of one indicator in my model is less than 0.7 and according to Hair et al. (2014), the adequate threshold for outer loadings should be 0.70 or higher, implying that the latent variable can explain at least 50% of each indicator’s variance. Indicators with outer loadings between 0.40 and 0.70 should be considered for removal when deleting the indicator results in an increase in the AVE. However, after I assessed the data from the second case of survey (same questions) and also if i analysed the data from two cases together, the loading of the same indicator is greater than 0.7. I'm wondering whether that indicator should be removed from the model?
I am trying to detect hair from face images that already have the landmark segmentation and the labels for them.
The infectious viruses such as Hepatitis B, C and HIV are endemic in some developing countries. A number of people practice "shaolin" haircut [clean hair shave]. a number of times people complaint of pain after shaving when spirits are applied. This may indicate that some micro-cuts were made on the skin during shaving.
With the unstable power supply and not so much aseptic procedures conducted by the Berbers, are we not potentially risking transmission of these viruses?
How possibly can we investigate this potential risks?
Dear all,
I am conducting a thermal analysis on human hair, and I have conducted a 1 deg C per minute heating rate on the samples, for a strand of hair (coiled and fit into the pan) as well as hair that has been sliced, from 50 deg C to 250 deg C
For the coiled hair, there is a small but interesting transition taking place at 160 deg C, but this is not observable in the sliced samples. I heard that the sample surface area has an impact on the results, and fibres should be tested whole if possible.
I was wondering if anyone could shed some light on how surface area affects DSC analysis?
I need some literatures or journal articles about the method for extracting keratin from animal hairs.
My dataset has a problem with "variance accounted for" where the percentage variance for 3 out of 12 variables is < 56% (Peterson, 2000) instead of > 60% (Hair et al., 2010). Are there studies that support "variance accounted for" at > 50%? My dataset has n=495 respondents (large sample size); I'm running a ML extraction w varimax rotation, factor loadings > .4
I think depends on other things help
I am searching for some genera or species in Brachycera that have hairs on wing veins. If anyone has an idea, I would be interested to read it !
Thanks in advance,
Valentin N.
Is there more to a permed hair than the alteration of the disulphide bonds between adjacent strands of protein in hair?
These days PRPis almost used in multiple diseases from athletes, to hair growth acceleration, joint pains and so many other conditions. Ca someone throw some light and provide any guidelines on this product?
Meeting a very young early career scholar got me thinking about long faculty careers and Academic Grandchildren.
Has anyone here on Research Gate taught a student and then 20 or 30 years later taught that same student's son or daughter?
Despite my increasing number of grey hairs. I am technically an early career scholar* since I returned for a PhD later in life. My PhD adviser was Dr. Michael Kruge of Montclair State's Earth and Environmental Science Department. Just as I was finishing my degree, both of my children enrolled in Montclair State and Michael became their undergraduate adviser. They also took undergraduate classes with some of the same faculty as I had for graduate classes.
I have been assisting a PhD candidate with her research and she was also the laboratory instructor in their program. (Does that make me my own Grandfather?)
In high schools Academic Grandchildren are quite common.
How common are Academic Grandchildren at the post-secondary level and do you think they are more or less common in the STEM fields?
Thank you
Kevin Olsen
PhD and father of two.
*The plan was to go from Early Career Scholar directly to Professor Emeritus skipping all the annoying bits in between.
Working on the extraction of heavy metals from hair and nails.
I have been analysing skeletal gastrocnemius muscle specimens from C57 mice and have observed these green rod-shaped structures in the photographs. thinking they were artefacts I ignored them mostly as they were usually surrounding the muscle and not embedded deep within the specimen.
But then looking at the H&E stained tissue, this specimen has a lot more of the rod-like structures placed deep within the tissue and they are surrounded by inflammation. Also they are not staining artefacts as their position is consistent between two specimens cut 5μm apart (see first two pictures).
Has anyone come across anything similar in their skeletal muscle specimens? Tips in how to interpret and understand what is going on would be highly appreciated. I have included other images taken from different part of the muscle specimen to maybe help in interpreting what is going on.
Many thanks!
Im hoping to do a MSc dissertation looking at relationship between childhood adversity (Predictor variable), Cortisol levels, coping style, parenting/attachment relations, (mediators/moderators) and adolescent resilience, (outcome variable). Having difficulty locating a reputable hair cortisol measuring service.
Does anone have experience using the QIAamp DNA Mini Kit for the extraction of DNA from human hair? How much of starting material will be necessary. How is the pretreatment of the sample done before starting the procedure according to the kits manual by ading buffer AL? Which kind of buffer (including DTT and Proteinase K) are you using and do you heat during incubation?
Thanks a lot for your advice!
Gertrud
I have been sputtering with bonded and none bonded ceramic targets for the past year or so. Recently I had a rather expensive target crack in my DC gun. I thought I had followed all ramp up/ramp down procedures correctly however, during my 5th or 6th run it formed a hair line crack. I'm growing at 55W with an unbonded HoBaCuO target ~0.25" thick.
I then switched back to my bonded targets (copper backed) however now these are forming hairline cracks! I'm curious to know what is a typical presputter time for growers. I'm thinking that with my shutter up I'm reflecting the energy back into the target making it heat up way faster than expected. Something has changed because for a year's worth of growing almost 7 days a week I've never cracked a target.
Another thing I changed about my set up was that I was told to use heat sink compound to mount the target to the gun to help cool it even more. Could this also have a negative effect on target stress during rump up/ramp down? Also, should I run the water through the gun and get her chilled before striking plasma or wait until I start ramp up?
Ramp up/Ramp down: 10W/2min
Target dimensions: 2" x 0.25"
Heat sink compound: Dow
I observed that when the surface is wet i.e, there is a very thin layer of water on the surface and if one hair thread falls on it, then the region near by hair get dry. That is water is being repelled by the hair.
Is there any existing theory to explain this phenomenon?
Dear RG researchers
Some persons have their hair on head till death while some persons get hair fall just after the age of 25 and have total hair fall reaching 40 years of age.
May "HAIR FALL" be thought as any energy pocket in the human body is going to be depleted?
Thanks for sharing very positive information.
With best regards
Ijaz
Mechanisn of entering of fungus into the hair shaft in endothrix lesion?
Hi everyone,
I'm looking for method to extract and derivatize the nail and hair samples for GC_IRMS analysis. There are so many preparation method, and I'm not sure which method suit my samples.
Many Thanks,
Farzaneh
Good day!
My main focus is on the Red King Crab and Snow Crab.
I need the following information on adult crabs to create prime conditions to transport crabs on fishing vessels alive:
- Prime density in live storage at sea (is m2 more important than m3). I have a research that indicates 150 kg pr m3 on land for crabs for 60 days (with minimal mortality - at 7 degrees Celsius) but have had leads from fisherman that more density is better, specially in rough seas.
- Oxygen requirements (water exchange rate)
- Ability to temper with temperature (or salinity) to speed up metabolism (to empty the crabs colon and increase ammonia release)
- Ability to temper with temperature (or salinity) to put the crabs in hibernation/dormant state.
If you have any information or research that can help me get the clearest idea of these points I appreciate it. I would also be thankful for contacts that might have useful points for my research.
Thank you in advance.
The figure is an X-ray fluorescence spectrum of a human hair, in order to analyze the chemical elements contained in the hair.
Q1: What is your assignment of peak a-j? (But this is not my true question here.)
Q2: What kind of information or database should be known before, in order to answer the above Q1? (This is my true question.)
Q3: Is the peak "c" assigned to As really arsenic?
Q4: Are all the elements assigned at Q1 existing in the hair?
I am looking for possible (non-expensive) treatment that prevent bio-degradation of pig hair (a food industry by-product) as well increases the roughness of the pig hair to impact the flexural toughness of fiber-reinforced concrete.
I recently obtained my Hair Tissue Mineral Analysis test results and found out that I am completely deficient in Lithium. I am going to supplement with a product called Agotene, to obtain a whole food source, but first I would like to know if this test results are accurate for measuring this particular mineral?
Thank you in advance:)
I accidentally used a contaminated solution for making aliquots for my growth factors. The growth factors are very expensive and we still want to use them. I am sure that the solution I used (0.1%BSA) was contaminated with fungus. The fungus was white and like a ball with long hair.
I store the contaminated growth factors in -20 C. Can someone tell me a way so that I can still use them in my medium and get rid of the contamination? Thank you!
Additionally, I cant really filiter them since there are only 2 ml in total.
From the farm, we will get the blood, swab,hair and different tissue sample for the RNA sequencing but the problem is the storage of those samples at the room temperature. They can send us the sample and it will take three days to reach lab but no freezing and dry ice transportation possible. so ,we need some preservatives to maintain as good as possible quality of the RNA and DNA for three days at the room temperature, then once it will reach to lab, we can store it at-80 C. So, if somebody can suggest practical-workable preservation methods of the blood, hair, tissues and swab samples, that would be great ? Thanks
After a preliminary biblographic search, it does not seem to exist any strong evidence of hair growth promotion / stimulation by topical application -- at safe concentrations -- of Juniperus virginiana essential oil. I would like to know more about this, in order to consider inclusion of this raw material in cosmetic formulations. Thanks in advance and best regards.
Anti-pollution cosmetics is gaining lot of attention worldwide. The pollution can be from sunlight, air and electromagnetic or optical devices. Pollution can affect health particularly the skin, hairs and eye.
Pollution creates excess free radicals which can damages the skin microstructure and components such as lipids and initiate inflammation, hyperpigmentation, aging process and skin cancers.
Many cosmetic products claiming anti-pollution properties with some data. However, we do not know what are legit techniques and gold standards. As such regulatory agencies have so far quite on this issue and are not providing any guidance to consumers and cosmetic companies. This is dangerous as many un-safe cosmetics can be sold in the market. Therefore, we need to work together to find gold standards and help consumers. Hope this initiative will trigger more interest and participation worldwide. Thank you.
Hello,
I've read some references to determine the number of samples.
Some says:
"at laest five times as many observations as the number of variables to be analyzed, and the more acceptable sample size would have 10:1 ratio" (Hair et al, 2009)
" In multivariate research (including multiple regression analyses), the sample size should be several times (preferably 10 times or more) as large as the number of variables in the study. : (Roscoe, 1975)
"Most researcher would recommend using sample sizes of at least 200/ 5 or 10 cases per parameters (see for an overview Kline, 2011, pp: 11-12)"
"Sample size for the questionnaire depends on the no of items in the questionnaire and the statistical analysis."
Some others says depend on the number of independent variables.
Which one to follow?
X have 3 sub variables:
X1 with 3 indicator, total 6 question item
X2 with 4 indicator, total 13 question item
X3 with 2 indicator, total 5 question item
with M as mediating variable (total 8 question) and Y as dependent variable total 4 question.
Dear all,
Are you aware of data related to the seasonal variation (i.e. weekly or monthly length) of goat hair growth rate. I found several references on cashmere but I'm interested on the normal main hair.
Many thanks in advance !
Rémi
I collected samples using a baited adhesive tape which was crossed by different animals in the wild.
Because I can’t know if different hairs I have on my tape are from different individuals I just use single ones for DNA Isolation. I incubate with cell lysis solution (100µl), proteinase k (0,5µl) on 55°C, protein precipitation solution, isopropanol and wash with ethanol leaving a rest of ethanol in the tube because I can’t see a pellet. I add 20µl hydration buffer.
Then I try a pcr (35cycles) with primer pairs for species specific microsats. After analyzing the product on an polyacrylamide gel I mostly just get multiple bands on the full length of the lane.
The dna purity is low (around 1 instead of 1.8) as well as the concentration, measured by photospectrometer (~4-12ng).
I don’t really know where the problem may come from because I get a pcr product. Maybe the primers are damaged because I defrosted them too often? Or can I do anything to earn more and more pure dna from a single hair? I didn’t try something like washing it before isolation. Maybe it is contaminated. The glue from the adhesive tape could also damage the dna?
I hope somebody has helpful answers to the topic. Thank you even now.
Bhasma is classical calcinated nano medicine. Mandoor is mentioned as one the main ingredient of Bhringraj Tailam. Many or practicinor use kashisha bhasma also in hair oil. How can we justify the effect of these bhasma on hair treatment. Bhasma has poor absorption through skin. Why classical texts mention mandoor like mineral in hair oil?
Need recommendations for research on topical formulations for skin and hair rejuvenation (dandruff, acne, hair loss, hair thinning etc.) for comparison and effectiveness test
I'm looking for a way to collect hair from gorillas, orangutans and gibbons in captivity to extract cortisol from. The collection cannot cause them stress, so shaving and plucking are out of the question.
Hi,
I am looking for insights on the keratin quantitative composition in human hair. I am looking to understand if there is a predominant type. I would like to do some in vitro tests with hair keratin but would like to use only 1or 2 keratin for the standardisation of the test.
Many Thanks!
Elsa
an elderly lady walked to the clinic was concerned about her grey hair on chin but not the saging folds and skin on her cheeks and forehead.
it looks like the people are more concerned about the grey or whiteining of hair than the folds of the skin.
looking young is not just in color but also in texture of skin.
how does Botox fit in the reversal of roles in India?
