Science topic

Bacteria - Science topic

One of the three domains of life (the others being Eukarya and ARCHAEA), also called Eubacteria. They are unicellular prokaryotic microorganisms which generally possess rigid cell walls, multiply by cell division, and exhibit three principal forms: round or coccal, rodlike or bacillary, and spiral or spirochetal. Bacteria can be classified by their response to OXYGEN: aerobic, anaerobic, or facultatively anaerobic; by the mode by which they obtain their energy: chemotrophy (via chemical reaction) or PHOTOTROPHY (via light reaction); for chemotrophs by their source of chemical energy: CHEMOLITHOTROPHY (from inorganic compounds) or chemoorganotrophy (from organic compounds); and by their source for CARBON; NITROGEN; etc.; HETEROTROPHY (from organic sources) or AUTOTROPHY (from CARBON DIOXIDE). They can also be classified by whether or not they stain (based on the structure of their CELL WALLS) with CRYSTAL VIOLET dye: gram-negative or gram-positive.
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As infecções do trato urinário causadas por bactérias resistentes aos antimicrobiano são o terceiro tipo de infecção mais comum em humanos, descritas em todo o mundo. Trata-se de estudo de série temporal realizado a partir de registros de urocultura positiva, no período de 1º de janeiro de 2011 a 31 de dezembro de 2019, na região metropolitana do m...
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O açaizeiro (Euterpe oleracea Mart., Arecaeae), palmeira nativa da bacia amazônica, expressa problemas associados ao seu desenvolvimento inicial, como germinação desuniforme e crescimento vagaroso. O objetivo deste estudo foi avaliar o desenvolvimento biométrico inicial de mudas de açaizeiro em função da inoculação, ou co-inoculação, com microrgani...
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Introduction: Bacterial infections are known reason for morbidity and mortality in hospitalized patients with cirrhosis among which Spontaneous bacterial peritonitis (SBP) is most common, accounts for around 20% to 30% mortality rate. Objective: To evaluate the frequency of in-hospital mortality in SBP patients. Study Design: Descriptive case serie...
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Background and Aim: Antibiotic resistance is a major global health threat. The increasing prevalence of drug-resistant bacteria poses a serious challenge to the effective treatment of infections in both humans and animals. Water is a major source of human and animal exposure to bacteria, and the presence of drug-resistant bacteria in water could pr...
Conference Paper
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On the basis of comprehensive studies, the expediency of using the structure-forming mixture and the bacterial preparation BP No. 3 in the production of ham has been practically proven, which helps to improve its quality indicators. The study of sensorial parameters indicates that the use of the bacterial preparation BP No. 3 improves the taste an...
Preprint
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Natural competence requires a contractile pilus system. Here, we provide evidence that the pilus biogenesis and natural competence in cyanobacteria are regulated by the second messenger c-di-AMP. Furthermore, we show that the ComFB signaling protein is a novel c-di-AMP-receptor protein, widespread in bacterial phyla, and required for DNA uptake.
Preprint
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In this paper, we propose an expansion of the Planck distribution function derived from the Boltzmann principle. Namely, we consider expanding Planck's law with a new distribution function, and discuss fine structure constant. Furthermore, using ideas applied to the expansion of the Planck distribution function, we show that Von Koch's inequality c...
Preprint
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Natural competence requires a contractile pilus system. Here, we provide evidence that the pilus biogenesis and natural competence in cyanobacteria are regulated by the second messenger c-di-AMP. Furthermore, we show that the ComFB signaling protein is a novel c-di-AMP-receptor protein, widespread in bacterial phyla, and required for DNA uptake.
Poster
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Variation of nitrification activity, heavy metals concentrations, and nitrifying bacteria/archaea in relation between different crops rotation and long-term tobacco field soils
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Z Tüberküloz dışı mikobakteriler grubunda yer alan ve doğal ortamda yaygın olarak bulunan Mycobacterium abscessus (M.abscessus), özellikle bağışıklık sistemi zayıf insanlarda, alt solunum yolu başta olmak üzere çeşitli enfeksiyonların etkeni olarak giderek artan sıklıkta bildirilmektedir. Bu olgu raporunda, kronik böbrek yetmezliği (KBY) zemininde...
Article
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Deubiquitinating enzymes (DUBs) are emerging as key factors for the infection of human cells by pathogens such as bacteria and parasites. In this review, we discuss the most recent studies on the role of deubiquitinase activity in exploiting and manipulating ubiquitin (Ub)-dependent host processes during infection. The studies discussed here highli...
Chapter
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Bağırsak mikrobiyotası ve egzersizin yakın zamanda birbiriyle bağlantılı olduğu gösterilmiştir. Orta düzeyde egzersiz; inflamasyon, bağırsak geçirgenliğinde azalma ve vücut pozisyonunda iyileşme gibi faydalar ile sporcuların sağlığı üzerinde olumlu etkilere sahiptir (Claus, vd., 2021). Allen ve arkadaşlarının çalışmalarında orta derecede endurans e...
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In this work, we implemented for the first time the cycloSaligenyl prodrug strategy to increase the bioavailability of fosmidomycin phosphate analogs in bacteria. Here, we report the synthesis of 34 cycloSaligenyl prodrugs of fosfoxacin and its derivatives. Among them, fifteen double prodrugs efficiently prevented the growth of the non-pathogenic,...
Article
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Introdução: As úlceras de difícil cicatrização caracterizam-se como uma patologia que afeta cerca de 20 milhões de pessoas pelo mundo. A terapia fotodinâmica TFD é um método que atua nas fases da cicatrização, bioestimulando o tecido e promovendo a morte dos microorganismos Objetivo: O objetivo deste estudo foi avaliar a TFD como técnica de ação ba...
Article
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The future of bacterial growth physiology is shining more brightly than ever [...]
Article
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Human development and water resources are inseparable, there is no shortage of water resources in the world, but there is a total amount of abundant, can directly use fresh water scarce. At the same time, the distribution of water resources in space and time is not uniform, and different regions have different development degrees and different util...
Article
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understand the chemical differences of culture media and the techniques for their preparation, in order to obtain the necessary criteria for their selection based on the needs of each bacteria and laboratory purposes.
Article
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Tujun Penelitian ini untuk mengklasifikasikan bentuk lingual dan mendeskripsikan makna kultural dan nilai budaya dari nama-nama penyakit nonmedis berdasarkan sudut pandang masyarakat setempat. Ruang lingkup penelitian ini berfokus pada nama-nama penyakit nonmedis dalam bentuk kata dan frasa yang diderita masyarakat adat Kasepuhan Cicarucub, Lebak,...
Presentation
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It is presented a general methodology to devise habitability metrics, and applied to develop a habitability index for chemoautotrophic bacteria in the context of current ocean acidification.
Article
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Resumo O preá é um roedor com elevado potencial biológico e zootécnico a ser explorado, sendo o conhecimento sobre os aspectos reprodutivos fundamentais para que sua criação seja satisfatória. Objetivou-se determinar a duração da gestação em preás, e a caracterização das fases do ciclo reprodutivo, verificando, se existe influência da presença do m...
Book
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Investigaciones marinas y costeras del Pacífico mexicano presenta información y datos de vanguardia los cuales se integran en diversos tópicos, desde estudios en organismos unicelulares como bacterias y microalgas enfocados a su rol ecológico, distribución y diversidad. Enseguida muestra estudios poblacionales y de distribución en zooplancton por e...
Article
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This research aimed to study the effect of the Diffusible Signal Factor (DSF) family-containing extract of culture of the bacteria Xanthomonas citri subsp. malvacerum S101 (Xcm S101) , and the pure DSF signal in limiting the growth and development of bacteria Xcm S101, and in defense responses in cotton plant
Presentation
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is a freelance Forensic science writer in Lone star tech. know-how DOA sports medicine The winner of the 2023 Disruptive Technology Award combines AI and novel microfluidics for single-cell microbiology.
Preprint
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In this paper, we propose an extension of the Planck distribution function derived from the Boltzmann principle. That is, we consider extending Planck's law with new distribution functions. In addition, using ideas applied to the expansion of the Planck distribution function, Von Koch's inequality is derived without using the Riemann hypothesis, sh...
Conference Paper
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Invitro antimicrobial effectiveness of selected local plant extracts against some dairy farm bacteria pathogens.
Article
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An Erratum to this paper has been published: https://doi.org/10.1134/S0016702923210036
Preprint
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Se lleva a cabo un trabajo de aula con el objetivo de que los estudiantes busquen soluciones sostenibles a los problemas ambientales en Colombia, en particular, relacionados con la contaminación del agua. Se destaca la importancia del agua como un recurso fundamental y se menciona que las aguas se contaminan debido a agentes contaminantes, como sus...
Article
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The biological management of plant diseases has developed into a separate scientific and technological discipline, and in recent years, this change has happened quickly. A form of bacterium known as a bacterial endophyte may colonize any portion of a plant without causing any symptoms or harm to the host plant.
Article
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Listeria monocytogenes é uma bactéria capaz de causar listeriose devido à ingestão de alimentos contaminados. A utilização de óleos essenciais (OEs) como antimicrobianos naturais tornou-se uma alternativa promissora aos conservantes sintéticos para evitar a contaminação microbiológica e garantir a segurança dos alimentos. Desse modo, o objetivo des...
Article
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Los alimentos contaminados por patógenos forman biopelículas con una alta resistencia a biocidas, desinfectantes y antibióticos. Los extractos vegetales pueden ser una alternativa potencial para combatirlos. Este estudio evaluó la actividad antimicrobiana y anti biopelícula de un extracto vegetal (Sambucus canadensis) utilizado ampliamente en comun...
Article
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The human gut microbiota is an ecosystem harboring trillions of microorganisms, encompassing bacteria, viruses, archaea, fungi, and protozoa [...]
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Here we present a 70-year-old man who presented with a rare case of cutaneous leukocytoclastic vasculitis (LCV) secondary to a crusted scabies (Sarcoptes scabiei var hominis) mite infestation. Few cases have been reported in the literature of LCV in association with scabies as LCV is typically caused by a bacterial or viral infection or other malig...
Article
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This study was aimed to know the effect of hatching and survival rate of milkfish larvae (Chanos chanos) treated with nanosilver. Three concentrations of nanosilver such as 0.25 ppm, 0.5 ppm and 0.75 ppm were applied to culture media at least an hour before stocking. Newly hatched larvae were stocked at the density of 50 pcs l⁻¹, and it was reared...
Article
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Pangan fermentasi merupakan produk pangan yang dihasilkan melalui proses fermentasi oleh bakteri asam laktat, khamir dan ragi, sehingga mengalami perubahan baik fisik, kimia, dan biologi, seperti kombucha dan susu kefir. Kombucha dan susu kefir merupakan contoh dari minuman fermentasi berbahan dasar teh dan susu yang masih belum terlalu dikenal. Ke...
Article
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A sífilis é uma infecção multissistêmica causada pela bactéria Treponema pallidum. Apesar da disponibilidade de estratégias preventivas para a identificação do recém-nascido de risco, e da diminuição global de sua incidência, a sífilis congênita continua a ser um problema significativo tanto nos países em desenvolvimento como nos países desenvolvid...
Article
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Bones perform several important functions. They support the body and protect internal organs. However, with age and in some diseases such as osteoporosis, bones can become weaker and can break easily. But do not worry! Several treatments are currently available to improve bone health. However, some of those treatments cause unpleasant side effects,...
Article
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Sabun antiseptik yang ada di pasaran selama ini menggunakan zat aktif sintetik untuk membunuh bakteri. Tujuan dari penelitian ini adalah mengetahui pengaruh penambahan ekstrak kayu secang terhadap daya hambat auerus pada sabun transparan dan mengetahui mutu sabun tranparan dari ekstrak kayu secang sesuai standar nasional indonesia (SNI 06-3532-2016...
Article
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Abstrak: Gambaran Angka Lempeng Total Bakteri Pada Jajanan Pentol Bakar Yang Dijual Di Wilayah Kecamatan Sungai Kunjang Kota Samarinda. Pentol bakar adalah produk pangan yang bahan utamanya terbuat dari olahan daging dan bahan lainnya. Batas maksimum cemaran mikroba pada bakso daging menurut SNI 3818:2014 untuk nilai ALT adalah 1 × 105 koloni/g. Fa...
Article
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Este artigo tem por objetivo fazer uma análise na literatura vigente acerca das complicações induzidas na mucosa gástrica pela bactéria Helicobacter Pylori. Foram realizadas buscas nas bases de dados do LILACS, SCIELO e PUBMED, utilizando os Descritores em Ciências da Saúde (DeCS): “Mucosa gástrica”, “Doença de refluxo gastroesofágico” e “Microbiot...
Article
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The hygienic conditions and quality of school canteen premises where meals are prepared for students were evaluated by examining and counting total mesophilic aerobic bacteria, total coliforms, and fecal coliforms. A total of 90 samples were collected from establishment N°1, 42 from establishment N°2, and 48 from establishment N°3. The results of t...
Article
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It revealed the effect of Moringa oleifera on some commonly known bacteria of public health importance
Presentation
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Oral Presentation named as “The Combined Use of Lachancea thermotolerans and Lactic bacteria in wine technology” that was presented during the “II International Congress on Grapevine and Wine Sciences (2ICGWS)” held in Logroño, La Rioja, Spain on November 8-10, 2023.
Article
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A hanseníase é uma doença infectocontagiosa crônica de importância histórica, provocada pelo Mycobacterium leprae. É um problema de saúde pública mundial e nacional, sendo que Brasil ocupa o 2º lugar o ranking internacional. As manifestações clínicas mais predominantes, quando evidenciadas, são as lesões de pele com sensibilidade diminuída e nervos...
Article
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Streszczenie Ziarenkowce z rodzaju Enterococcus spp. są składnikiem mikrobioty ludzi i zwierząt oraz powszechnie występują w środowisku naturalnym. Należą do patogenów warunkowo chorobotwórczych, mogących wywoływać zakażenia o różnej lokalizacji. Bakterie te rzadko wywołują zakażenia pozaszpitalne. Mimo, że do niedawna były uważane za drobnoustroje...
Article
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Surimi merupakan produk intermediate yang dibuat dari daging ikan yang mengalami proses pencucian berulang kali untuk menghilangkan lemak dan disimpan pada suhu rendah (penyimpanan beku). Penelitian ini bertujuan untuk untuk mengetahui mutu pada produk olahan surimi dari daging ikan layang (Decapterus sp) dan daging ikan tongkol (Euthynnus Affinis)...
Presentation
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For more details compare: Kupke, T., Götz, R.M., Richter, F.M. et al. In vivo characterization of the bacterial intramembrane-cleaving protease RseP using the heme binding tag-based assay iCliPSpy. Commun Biol 6, 287 (2023). https://doi.org/10.1038/s42003-023-04654-z
Article
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Esta investigación tuvo como propósito, determinar la frecuencia y factores de riesgo de coliformes totales en cremas picantes de salchipollerías de la ciudad de Jaén-Perú, 2023. Se destaca una investigación de tipo experimental, con un enfoque cuantitativo y de corte transversal. Se obtuvo un total de 28 muestras de cremas de ají de diferentes sal...
Article
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O objetivo deste estudo foi verificar a viabilidade da produção de refrigerantes e de alimentos prontos para o consumo, aplicando enxágue com água ozonizada na troca de sabores. Assim, essa opção seria uma substituição ao CIP (clean in place) convencional, que consiste em enxágue com água potável (5 minutos), circulação da solução de hidróxido de s...
Article
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Madu klanceng memiliki banyak manfaat bagi kesehatan manusia. Manfaat yang didapatkan dapat meningkatkan kekebalan tubuh, anti bakteri dan juga bisa sebagai obat untuk penyakit gula, jantung, dan stroke. Madu klanceng merupakan madu yang murni dihasilkan dari nektar bunga yang tidak akan kadaluarsa. Kelompok peternak budidaya madu klanceng Desa Ked...
Article
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The oral cavity is an ideal niche for microbial prosperity due to its stable temperature, suitable pH, and continuous nutrient supply [...]
Article
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Kemampuan penghambatan pertumbuhan bakteri dari gel handsanitizer adalah cukup baik. Daun bawang (Allium fistulosum) memiliki kandungan allicin yang dapat berfungsi sebagai penghambatan pertumbuhan bakteri Staphylococcus aureus. Tujuan dari penelitian ini adalah untuk menguii aktivitas antibakteri Staphylococcus aureus dari gel Hand Sanitizer yang...
Conference Paper
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Introdução: No mês de setembro de 2023, a OMS (Organização Mundial da Saúde) emitiu um alerta para o aumento de notificações de cólera no mundo, uma vez que 44 países reportaram casos da doença (WHO, 2023). À luz desse panorama, no Brasil há uma evidente preocupação em relação às doenças transmitidas de forma hídrica, dado que a cólera — doença cau...
Article
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Um possível fator etiológico do parto prematuro (PP) é a doença periodontal (DP), infecção sustentada prevalentemente por bactérias Gram-negativas anaeróbias. Sob condições favoráveis, esses microrganismos, suas toxinas e os consequentes mediadores inflamatórios poderiam ganhar a corrente sanguínea e chegar ao útero grávido. O objetivo deste trabal...
Article
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Penelitian ini bertujuan untuk mengetahui pengaruh penambahan daun kelor dan lama penyimpanan terhadap jumlah bakteri dan uji organoleptik telur asin. Penelitian ini dilakukan dengan metode eksperimen yang menggunakan Rancangan Acak Lengkap pola faktorial yang masing-masaing dilakukan tiga kali ulangan untuk uji jumlah total bakteri dan organolepti...
Article
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Kacang kedelai merupakan bahan pangan yang banyak diolah. Salah satu olahan kacang kedelai adalah minuman sari kedelai yang dapat diolah lebih lanjut menjadi produk fermentasi berupa soygurt. Proses fermentasi sari kedelai tidak menghilangkan keseluruhan aroma yang tidak diinginkan sehingga perlu penambahan sari buah nanas yang bisa menghilangkan a...
Article
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Sate bandeng merupakan salah satu hidangan khas dari Provinsi Banten yang cenderung mengalami penurunan kualitas dengan cepat. Sate bandeng hanya dapat tetap segar selama sekitar 2 hari pada suhu ruangan dan 6 hari jika disimpan dalam kondisi dingin. Kendala masa simpan yang terbatas ini disebabkan oleh kandungan gizi yang tinggi dalam hidangan ter...
Article
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Mengkudu (Morinda citrifolia L.) merupakan tanaman yang mengandung berbagai senyawa kimia antara lain flavanoid, saponin, tanin, polifenol dan terpenoid sebagai anti bakteri. Tujuan penelitian ini adalah untuk mengetahui ekstrak etanol daun mengkudu (Morinda citrifolia L.) dapat diformulasikan menjadi sediaan gel antibakteri dan menghambat pertumbu...