Hamid al-gabr

albaydha university yemen · Biology

Heterotrophic nitrification and aerobic denitrification (HNAD) sludge were successfully acclimated. The effects of organics and dissolved oxygen (DO) on nitrogen and phosphorus removal by the HNAD sludge were investigated. The nitrogen can be heterotrophically nitrified and denitrified in the sludge at a DO of 6 mg/L. The TOC/N (total organic carbo...

This study aimed to estimate the physical and chemical properties of prickly pear fruits. Prickly pear fruit samples were collected from local markets in Dhamar, Yemen. The results showed that the mean weight of prickly pear fruits was 89.27 g, while the pulp, peel, seeds, and extracted juice weights were 47.57, 40.96, 3.52, and 37.07 g, respective...

The medicinal plants which are used in traditional medicine for treating of many diseases. These plants contain many materials as alkaloids, flavonoids, glycosides etc.that make them effective for use in medical purposes. Seven plant extracts (Black seed, Rue, Radish, Onion, Cactus, and Guava) were used in this study. The paper disc diffusion ass...

Three new bioactive nanosized supramolecular cobalt coordination polymers; {[Co2(tyr)2(Morph)2(Cl)2(H2O)2]}n (1), {[Co(Morph)6]+2[Co(bdc)(Morph)2(Cl)2]−2.3H2O}n (2) and {[Co(Morph)6]+2[Co(H2btec)(Morph)3(H2O)]−2.10H2O}n (3), where L-tyr = L-tyrosine, H2bdc = Terephthalic acid, H4btec = Pyromellitic acid and Morph = Morphline, they were prepared and...

Sponge iron is a potential material for nitrogen removal, but lack of a study about nitrogen removal in a membrane bioreactor (MBR) coupled with sponge iron. The performances and mechanisms of nitrogen removal of SI-MBR were investigated and compared it with that in GAC-MBR. The results showed that the average rate of organic matter removal in t...

The objective of this study was to estimate some physicochemical and microbiological properties of natural geothermal water from four wells located in Dhamar city, including total dissolved salts (TDS), pH, electrical conductivity (EC), temperature (°C), turbidity, total hardness, iron, total bacterial and coliform bacteria counts to determine sui...

In this study the quality properties of Yemeni honeys were investigated. Two types of honey, monofloral (Sidr) and multi-flora honey originated from three different regions in Yemen (Hadramout, Dhamar and Amran governorates), were included in this study. Honey samples were collected and analyzed to determine their physicochemical properties such as...

Drinking water sources contain different kinds of biological pollutants, such as bacteria, viruses, protozoa, and fungi. Furthermore, some of biological pollutants may cause health problems. Albayda governorate has witnessed many diseases due to using water from open wells. As a result, the purpose of this report is to address the occurrence an...

MTBE is a synthetic organic compound added to gasoline. MTBE dissolves readily in water and evaporates quickly. Blood is considered to be a good bio-indicator for many toxic-induced ailments by chemicals that are injected into the body as MTBE. This study focuses on the possible health hazards of MTBE in drinking water as manifested by changes in b...

Drinking water sources contain different kinds of biological pollutants, such as bacteria, viruses, protozoa, and fungi. Furthermore, some of biological pollutants may cause health problems. Albayda governorate has witnessed many diseases due to using water from open wells. As a result, the purpose of this report is to address the occurrence and fr...

Drinking water sources contain different kinds of biological pollutants, such as bacteria, viruses, protozoa, and fungi. Recently, researchers have reported the presence of fungi in drinking water (Goncalves et al. 2006a; Pereira et al. 2010), and have observed that these fungi affect the taste and odor of the water. A wide variety of fungi species...

Aquatic fungi commonly infest various aqueous environments and play potentially crucial roles in nutrient and carbon cycling. Aquatic fungi also interact with other organisms to infl uence food web dynamics. In recent decades, numerous studies have been conducted to address the problem of microorganism contamination of water. The major concern has...

Aquatic fungi are common in various aqueous environments and play potentially crucial roles in nutrient and carbon cycling as well as interacting with other organisms. Species of Aspergillus are the most common fungi that occur in water. The present study was undertaken to elucidate the efficacy of two coagulants, aluminum sulfate and ferric chlori...

The disinfection process for inactivating microorganisms at drinking water treatment plants is aimed for safety of drinking water for humans from a microorganism, such as bacteria, viruses, algae, fungi by using chlorination, ozonation, UV irradiation, etc. In the present study, a combination of two disinfectants, UV irradiation followed by chlorin...

Mycotoxins are considered as the most hazardous fungal metabolites for human, animals and plant health. Recently, more attention has been paid on the occurrence of this group of fungi in different water sources throughout the globe. In this study, Aspergillus parasiticus ATCC strain was used as representative strain producing aflatoxins in drinking...

Fungi are known to play an important role in nutrient and carbon cycling, and the occurrence of fungi in the water supply may result in a variety of human health problems. This study aimed to investigate the occurrence and frequency of various fungi in drinking water over a one-year period. The study also aimed to quantify the fungal presence using...