Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Life Sciences (5473)
- Medicine and Health Sciences (3232)
- Social and Behavioral Sciences (2927)
- Physical Sciences and Mathematics (2653)
- Education (1844)
-
- Biology (1587)
- Engineering (1493)
- Arts and Humanities (1482)
- Law (1273)
- Psychology (793)
- Medical Specialties (767)
- Environmental Sciences (764)
- Higher Education (762)
- Animal Sciences (725)
- Medical Sciences (717)
- Chemistry (712)
- Biochemistry, Biophysics, and Structural Biology (647)
- Plant Sciences (627)
- Ecology and Evolutionary Biology (621)
- Sociology (454)
- Public Health (419)
- Microbiology (362)
- Biochemistry (346)
- History (346)
- Cell and Developmental Biology (341)
- Earth Sciences (340)
- Genetics and Genomics (329)
- Library and Information Science (318)
- Agriculture (313)
- Computer Sciences (310)
- Institution
-
- University of Nebraska - Lincoln (1473)
- University of South Florida (625)
- Brigham Young University (575)
- Purdue University (550)
- Louisiana State University (541)
-
- TÜBİTAK (538)
- City University of New York (CUNY) (484)
- University of Kentucky (472)
- Utah State University (413)
- Washington University School of Medicine (391)
- University of Montana (385)
- Virginia Commonwealth University (328)
- Clemson University (302)
- University of Rhode Island (287)
- University of Alabama at Birmingham (271)
- Nova Southeastern University (270)
- University of Malaya (270)
- University of Plymouth (265)
- University of Central Florida (260)
- Georgia Southern University (259)
- University of South Carolina (255)
- University of Arkansas, Fayetteville (253)
- University of Connecticut (243)
- California Polytechnic State University, San Luis Obispo (235)
- Wayne State University (235)
- Zucker School of Medicine at Hofstra/Northwell (235)
- Old Dominion University (229)
- Portland State University (229)
- University of New Mexico (228)
- University of New Hampshire (221)
- Keyword
-
- Humans (209)
- Animals (162)
- Education (156)
- Biology (143)
- Newspaper (141)
-
- Gender (134)
- Biological Sciences (130)
- Climate change (122)
- Female (112)
- 2014 (102)
- Cancer (94)
- Biological sciences (91)
- Research (91)
- Genetics (88)
- Ecology (85)
- Student newspaper (84)
- Male (82)
- Thomas Jefferson University (79)
- Evolution (78)
- Mice (75)
- Environment (73)
- Newsletter (72)
- Sustainability (70)
- Georgia Southern University (69)
- History (69)
- Obesity (69)
- Higher education (68)
- Psychology (68)
- Applied sciences (67)
- Children (66)
- Publication
-
- Theses and Dissertations (853)
- Electronic Theses and Dissertations (446)
- Faculty Publications (439)
- Open Access Publications (369)
- Journal Articles (271)
-
- Journal of Undergraduate Research (258)
- Dissertations (231)
- Master's Theses (224)
- USF Tampa Graduate Theses and Dissertations (222)
- Open Access Dissertations (221)
- Publications and Research (217)
- All Forum Articles (203)
- Open Access Theses (189)
- Student Works (2010-2019) (179)
- Dissertations, Theses, and Capstone Projects (158)
- Graduate Theses, Dissertations, and Problem Reports (ETD) (152)
- Honors Theses (152)
- Theses (152)
- Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions) (141)
- All ETDs from UAB (137)
- Doctoral Dissertations (137)
- Dartmouth Scholarship (136)
- University of Montana Course Syllabi (134)
- Graduate Theses and Dissertations (132)
- LSU Doctoral Dissertations (128)
- United States Department of Agriculture Wildlife Services: Staff Publications (119)
- Faculty Scholarship (118)
- LSU Master's Theses (118)
- Turkish Journal of Biology (118)
- Articles (109)
- Publication Type
- File Type
Articles 9091 - 9120 of 25965
Full-Text Articles in Entire DC Network
Study Of Growth Curve And Morphological Change For Trichomonas Vaginalis Parasite In The Tow Culture Media, Ekhlas M. Edan, Amna N. Jassim, Ali H. Ad‚Hiah
Study Of Growth Curve And Morphological Change For Trichomonas Vaginalis Parasite In The Tow Culture Media, Ekhlas M. Edan, Amna N. Jassim, Ali H. Ad‚Hiah
Baghdad Science Journal
The objective of this study was shed light for cultivation and maintenance of Trichomonas vaginalis parasite growth after isolated it by vaginal swaps from females suffering vaginitis and abnormal vaginal discharges in these media CPLM and TAB media to detect growth curve, morphological changes and viability of parasite in the two culture media, together with effect of sheep and bovine serum on the growth of it. The results of this studies were showed there was abtaine differences between the two types of media , The maximum growth of parasite was in TAB medium after 72 hours incubation with use of …
Effect Of Citrus Aurantifolia Seed Extracts In Some Bacteria Isolated From Burns Infections, Suaad K. Ibrahim, Ilham S. Banno, Sawsan M. Abdella
Effect Of Citrus Aurantifolia Seed Extracts In Some Bacteria Isolated From Burns Infections, Suaad K. Ibrahim, Ilham S. Banno, Sawsan M. Abdella
Baghdad Science Journal
The present study was carried to evaluate antibacterial activity of Acetone, Alcholic (cold and hot) and Aqueaus(water) extracts of Citrus aurantifoliaseeds,against growth of some bacteria isolated from burns infections(Pseudomonas aeruginosa,Escherichia coli, Klebsiellapneumonia,Staphylococcusaureus)fromKindy HospitalIn Baghdad from March to June 2012.Antibiotic Sensitivity was done for all isolated bacteria used in this study.Results showed variation in antibacterial activity of different extracts against all tested bacteria by well diffusion technique in agar and measuring the diameter of inhibition zone, at concentration 250Mg-ml. Acetone extract had the greatest inhibitory effect followed by hot alcoholci extract, and then cold alcoholic extract,while the aqueous extract slightly inhibited …
Biological Activity And Protease Inhibitor From Watery Extract Of Lentil (Lens Culinaris) Against Some Bacterial Species, Khulood A Al-Khafaji, Salman A. Hammood, Sahar G Omran, Manal A Hassan, Husham J Yaseen, Abood H, Suhaila G. Ali
Biological Activity And Protease Inhibitor From Watery Extract Of Lentil (Lens Culinaris) Against Some Bacterial Species, Khulood A Al-Khafaji, Salman A. Hammood, Sahar G Omran, Manal A Hassan, Husham J Yaseen, Abood H, Suhaila G. Ali
Baghdad Science Journal
Biological activity substances was investigated in watery extract of lentil which found to contain phenols, tannin, saponins and resins while, flavons, terpens and steroids were not exist in the extract details explained that 5%, 10% of lentil extract largly inhibited the growth of Psedumonas aeruginosa then Escherichia coli and Bacillus subtilis. The growth of both Staphylococcus aureus and Salmonella typhimurium were slightly affected by all extract concentration. Extracellular protease were screened in all bacterial species under study. Complete inhibition was achieved for extracellular protease while different percentage of protease inhibition were seen for intracellular proteases.
Dispersal And Development Of Powdery Mildew Disease Caused By Oidiopsis Haplophylli On Ornamental Plants (Nasturtium) Tropaeolum Majus L. In Baghdad, Jinan K. Abd-Ai-Razak, Wadeja M. Kuthair
Dispersal And Development Of Powdery Mildew Disease Caused By Oidiopsis Haplophylli On Ornamental Plants (Nasturtium) Tropaeolum Majus L. In Baghdad, Jinan K. Abd-Ai-Razak, Wadeja M. Kuthair
Baghdad Science Journal
This study wass carried out to investigate the incedence of powdery mildew disease on ornamental plants (Nasturtium) Tropaeolum majus L. caused by Oidiopsis haplophylli in some nurseries of Baghdad area and in fields at college of Agriculture /University of Baghdad. This study was conducted in tow succesive seasons of 2011-2012 (April and May). The survey indicated that the Mildew disease existe in the following nurseries (Al-Adhamiya 97.5% ,Palestine street 93.8%, Zayouna 86.0%, and 100% in two fields at college of Agriculture. It has been found that the disease severity was developed in Agriculture college fields successively from 12-4-2011 to 20-5-2011 …
Study Of Some Physical And Chemical Properties Of Staphylolysin Enzyme Purified From Pseudomonas Aeruginosa, Shayma'a S. Najim, May T. Flaih
Study Of Some Physical And Chemical Properties Of Staphylolysin Enzyme Purified From Pseudomonas Aeruginosa, Shayma'a S. Najim, May T. Flaih
Baghdad Science Journal
Some of the characters of the Staphylolysin A and D enzymes purified from Pseudomonas aeruginosaP16and P5respectively were studied, the molecular weights of Staphylolysin A and D were 20.417 kilo dalton and 23.988 kilo Dalton respectively by SDS-polyacryl amide gel electrophoresis. The optimum pH for staphylolysin A activity was found to be 8 which gives higher activity reaches 150 unit/ml, and for enzyme stability was 7.5-8.5 in which the enzyme nearly retained its full activity, while it was 9.5 for staphylolysin D that gives higher activity of 16unit/ml,and 8.5-9.5 for enzyme stability in which the enzyme nearly retained its full activity, …
Ecological And Geographical Distribution Of Species And Genera Of Primulaceae In Iraq, Huda J. Mohammed Al-Tameme, Abdul Karim Kh. Al-Berman
Ecological And Geographical Distribution Of Species And Genera Of Primulaceae In Iraq, Huda J. Mohammed Al-Tameme, Abdul Karim Kh. Al-Berman
Baghdad Science Journal
The present research deal with ecological and geographical distribution of species and genera of Primulaceae in Iraq. The results were revealed that species distributed in the north , north-east and west of Iraq. Anagallis arvensis L. is the most prevalent species tolerant to different environmental conditions, while the species of Primula L. characterized as less widespread and limited in one District. In addition, the districts Rawanduz (MRO) and Sulaymaniyah (MSU) have ranked first in distribution of the species on geographical districts with (75%), while the districts southern desert (DSD) and Basra (LBA) in last place with (16.7%). Maps for geographical …
The Role Of Tnf-Α In The Pathogenesis Of Multiple Myeloma “A Study In Iraqi Patients”, Azhar J. Mohsin, Talib A. Hussein, Sabah N. Mohammedmohammed A. Essa, Mohammed A Essa
The Role Of Tnf-Α In The Pathogenesis Of Multiple Myeloma “A Study In Iraqi Patients”, Azhar J. Mohsin, Talib A. Hussein, Sabah N. Mohammedmohammed A. Essa, Mohammed A Essa
Baghdad Science Journal
During recent years, there has been an increasing interest in the investigation of the cytokines roles in pathogenesis of cancer, thus the study aimed at evaluating the level of tumor necrosis factor-alpha(TNF-α) in sera of Iraqi multiple myeloma (MM) patients. Beta 2-microglobulion (β2-m) was assessed to determine if there was any association between this cytokine and the level of β2-m, as the latter is related to the stage of the disease. In addition, the age and gender were also taken into consideration. Furthermore, we investigated the relationship between IgG and TNF-α in sera of patients. 49 Iraqi patients (27 males …
Efficacy Of Saccharomyces Cerevesiae On Promoting Growth In Tomato, Nahida M. Saleh, Adnan A. Issa
Efficacy Of Saccharomyces Cerevesiae On Promoting Growth In Tomato, Nahida M. Saleh, Adnan A. Issa
Baghdad Science Journal
This study was conducted to evaluate the efficacy of Saccharomyces cerevesiae as a growth promoting agent in tomato. Soaking the seeds in yeast suspension at 5 g/L for 12h increased germination percentage, root length, root fresh and dry weight, plant height, foliage fresh and dry weight, attained 88.5% ; 8.1 cm ; 84.3 mg ; 7.03 mg ; 10.75 cm ; 839 mg and 37.75 mg compared with 80% ; 5.33 cm ; 39 mg ; 4.8 mg ; 7.35 cm ; 608 mg and 25.5 mg in seedlings grown from non treated seeds respectively. Similar results were obtained with …
Effect Of Some Medicinal Plants On The Activity Of Some Immunological Factors In Saliva And Serum Of Type –Iı Diabetics, Rawdha K. Al-Jammas, Ferial A. Al-Mahdawi, Abbas F. Al-Mukhtar
Effect Of Some Medicinal Plants On The Activity Of Some Immunological Factors In Saliva And Serum Of Type –Iı Diabetics, Rawdha K. Al-Jammas, Ferial A. Al-Mahdawi, Abbas F. Al-Mukhtar
Baghdad Science Journal
The study involved 45 male and 45 females of diabetic patients type- ıı aged from 40-69years , and with the same numbers of males and females for control , all the patients and controls were without any periodontal diseases and without any systemic disease. Diabetic patients were divided in to three groups according to the degree of periodontitis , and the inflamed gingiva of all groups of diabetic patients were treated with the dried fruits powder (crude) of medicinal plants Quercus robur , Thuja occidenalis , Terminalia chebula, Anethum graveolens , respectively and mixture. Some immunological and antimicrobial factors (IgA, …
Recording Callitetrarhynchus Gracilis (Rudolphi, 1819) And Callitetrarhynchus Sp. (Cestoda: Trypanorhyncha) Parasitic In Tow Carangid Fishes In North West Arab Gulf, Iraq, Suzan A. Al-Azizz, Fatimah H. Al-Ataby, Khalidah S. Al-Niaeem
Recording Callitetrarhynchus Gracilis (Rudolphi, 1819) And Callitetrarhynchus Sp. (Cestoda: Trypanorhyncha) Parasitic In Tow Carangid Fishes In North West Arab Gulf, Iraq, Suzan A. Al-Azizz, Fatimah H. Al-Ataby, Khalidah S. Al-Niaeem
Baghdad Science Journal
Recording two species of larval cestodes Callitetrarhynchus gracilis and Callitetrarhynchus sp. (Cestoda: Trypanorhyncha) parasitic in body cavity of two carangid fishes (Carangoides malabaricus and Megalaspis cordyla) from north west Arab Gulf, Iraq, is described. The species Callitetrarhynchus sp. was recorded for the first time in Iraq in carangid fishes. Also, two fish species (C. malabaricus and M. cordyla) are considered as new hosts for C. gracilis and Callitetrarhynchus sp. in the Arab Gulf. The cestodes were sent to Prof. Dr. Harry W. Palm, Department of Fisheries Biology, Institute Zoo Morphology, Germany for confirmation of the identification.
Oogenesis In Shabout Barbus Grypus Heckel , 1843, Aveen R Mohsin, Abedelhakim A Al-Rawi, Nahla A Al-Bakri
Oogenesis In Shabout Barbus Grypus Heckel , 1843, Aveen R Mohsin, Abedelhakim A Al-Rawi, Nahla A Al-Bakri
Baghdad Science Journal
The female Shabout were collected as samples from Dijla river in Baghdad. The oocyte developmental stages were divided in to nine stages, based on nucleus structure , cellular inclusions and ovarian follicle structure ,they are:-( Oogonia stage , Early Perinucleolar Stage , Advanced Perinucleolar Stage , Cortical Alveoli Stage , Primary Yolk Stage , Secondary Yolk Stage , Tertiary Yolk Stage , Migratory Nucleus Stage , Hydration Stage(
Comparative Study Of Hydatid Cysts Isolated From Livers Of Different Hosts, Ilham A. A. Al-Tikrity, Zohiar A.M. Al-Janabi, Abdullah H. A. Al-Jubory
Comparative Study Of Hydatid Cysts Isolated From Livers Of Different Hosts, Ilham A. A. Al-Tikrity, Zohiar A.M. Al-Janabi, Abdullah H. A. Al-Jubory
Baghdad Science Journal
Fifty three hydatid cysts were collected from different hosts, sheep, goats and cattle , from many slaughterhouse in Salahadin and Baghdad , while human's hydatid cysts samples were collected from Tikrit educational hospital and Tofiqe civilian hospital patients . The study included a biochemical comparison of some hydatid cyst fluid criteria such as, glucose, total protein, pH, glutamate pyrovate transaminase enzyme (GPT) , glutamate oxaloacetate transaminase enzyme (GOT) , acid phosphatase (ACP) , Alkaline Phosphatase (ALP) , and also studied protoscolices viability,the current study showed the differences in chemical composition of hydatid cyst fluids back to host type and parasite …
Antiamoebic Activity Of Extracted Alkaloids Of Capparis Spinosa In Laboratory Mice, Faten A. J. Mustafa, Azhar F. Jaafer
Antiamoebic Activity Of Extracted Alkaloids Of Capparis Spinosa In Laboratory Mice, Faten A. J. Mustafa, Azhar F. Jaafer
Baghdad Science Journal
The current study was concerned with the effect of alkaloid extract of the aerial parts of Capparis spinosa against Entamoeba histolytica and compared with drug Metronidazole in the laboratory mice .Stool samples were collected from people infected with maebiasis to infect laboratory mice . The alkaloid compounds were separated by thin chromatography technique (TLC) and identified by spectral methods represented by spectral infrared (IR) and altraviolate (UV) . the stady include determining mid-term lethal dose LD50 of the extract as the concentration was 21.65 g / kg . The effect dose of the extract was tested on the infected experimental …
Graph-Regularized Dual Lasso For Robust Eqtl Mapping, Wei Cheng, Xiang Zhang, Zhishan Guo, Yu Shi, Wei Wang
Graph-Regularized Dual Lasso For Robust Eqtl Mapping, Wei Cheng, Xiang Zhang, Zhishan Guo, Yu Shi, Wei Wang
Computer Science Faculty Research & Creative Works
Motivation: As a promising tool for dissecting the genetic basis of complex traits, expression quantitative trait loci (eQTL) mapping has attracted increasing research interest. An important issue in eQTL mapping is how to effectively integrate networks representing interactions among genetic markers and genes. Recently, several Lasso-based methods have been proposed to leverage such network information. Despite their success, existing methods have three common limitations: (i) a preprocessing step is usually needed to cluster the networks; (ii) the incompleteness of the networks and the noise in them are not considered; (iii) other available information, such as location of genetic markers and …
The Impact Of Relationship Functioning On Cortisol In Married Couples: A Dyadic Exploration Of Sleep As A Potential Mediator, Benjamin D. Clark
The Impact Of Relationship Functioning On Cortisol In Married Couples: A Dyadic Exploration Of Sleep As A Potential Mediator, Benjamin D. Clark
Theses and Dissertations
Relationship functioning in couples has been linked to numerous health outcomes. The purpose of this study was to examine the association between 1) marital functioning and sleep dimensions, 2) marital functioning and cortisol, and 3) sleep dimensions and cortisol. The sample consisted of 108 heterosexual, married couples and was part of a larger marital intervention study. As predicted, poor marital functioning was related to negative sleep outcomes. However, these effects were only significant for wives. There was also evidence to suggest that poor marital functioning was associated with increased cortisol levels in husbands. These effects were independent of age and …
Usd Magazine Summer 2014, University Of San Diego
Usd Magazine Summer 2014, University Of San Diego
University of San Diego Magazine (1992- )
From the President; Torero News; Faith in Action; Torero Athletics; A Swell Life; What's the Big Idea? Alumni News; Torero Notes; Changemaker
Catastrophe Models For Cognitive Workload And Fatigue In A Vigilance Dual Task, Stephen J. Guastello, Matthew Malon, Paul Timm, Kelsey Ann Weinberger, Hillary Gorin, Megan Fabisch, Kirsten Poston
Catastrophe Models For Cognitive Workload And Fatigue In A Vigilance Dual Task, Stephen J. Guastello, Matthew Malon, Paul Timm, Kelsey Ann Weinberger, Hillary Gorin, Megan Fabisch, Kirsten Poston
Psychology Faculty Research and Publications
Objective: This study investigated two cusp catastrophe models for cognitive workload and fatigue for a vigilance dual task, the role of emotional intelligence and frustration in the performance dynamics, and the dynamics for individuals and teams of two participants.
Background: The effects of workload, fatigue, practice, and time on a specific task can be separated with the two models and an appropriate experimental design. Group dynamics add further complications to the understanding of workload and fatigue effects for teams.
Method: In this experiment, 141 undergraduates responded to target stimuli that appeared on a simulated security camera display at three rates …
From Defending Theism To Discerning Spirits: Reconceiving The Task Of Christian Philosophy, Neal Deroo
From Defending Theism To Discerning Spirits: Reconceiving The Task Of Christian Philosophy, Neal Deroo
Pro Rege
Dr. Neal DeRoo presented this paper at a joint meeting of the Society for Christian Philosophers and the Society for Continental Philosophy and Theology, held at Trinity College, June 2014. The topic of the meeting was, "What is Christian Philosophy," celebrating the 30-year anniversary of the publication of Alvin Plantinga's landmark essay "Advice to Christian Philosophers."
Crowdsourcing Public Health Experiments: A Response To Jonathan Darrow's Crowdsourcing Clinical Trials, Ameet Sarpatwari, Christopher Robertson, David Yokum, Keith Joiner
Crowdsourcing Public Health Experiments: A Response To Jonathan Darrow's Crowdsourcing Clinical Trials, Ameet Sarpatwari, Christopher Robertson, David Yokum, Keith Joiner
Faculty Scholarship
We are pleased to have this opportunity to respond to Jonathan Darrow's article, Crowdsourcing Clinical Trials (CCT).' We seek to highlight its important contributions and to commence debate over some of its arguments. In particular, we qualify the ethical arguments that characterize early clinical use of drugs as if they were research, and suggest instead that, in either domain, the ethical (and legal) analysis should remain focused on whether all material information is provided so patients may make informed decisions. We also highlight the limits of what can be gleaned from the observational data collection efforts envisioned by CCT.
Ultimately, …
Identification Of Drug Leads Against Hcv And Malaria Using Different Target Proteins, Reem Al Olaby
Identification Of Drug Leads Against Hcv And Malaria Using Different Target Proteins, Reem Al Olaby
Theses and Dissertations
Hepatitis C Virus (HCV) infects 170 million individuals worldwide. Although several newly FDA approved drugs targeting the HCV serine protease and polymerase have shown promising results, there is a need for better drugs that are effective in treating all HCV genotypes and subtypes to be used in an interferon-free regimen. On the other hand, malaria is another public health burden that causes 219 million clinical episodes, and 660,000 deaths per year. In addition, 3.3 billion people live in areas at risk of malaria transmission in 106 countries. It is alarming that 86% of deaths caused by malaria globally were in …
Polyketide Synthase Iii Isolated From Uncultured Deep-Sea Proteobacterium From The Red Sea- Functional And Evolutionary Characterization, Hadeel Mansour El Bardisy
Polyketide Synthase Iii Isolated From Uncultured Deep-Sea Proteobacterium From The Red Sea- Functional And Evolutionary Characterization, Hadeel Mansour El Bardisy
Theses and Dissertations
Natural polyketide products are one of the major secondary metabolites produced among bacteria, fungi, and plants. They vary from flavonoids, pyrones, and stilbenes to phloroglucinols and resorcinols that are involved in important functions as antimicrobial activity, defense mechanisms and pigmentation. They are biosynthesized from acyl-CoA precursors by polyketides synthases (PKSs) that are categorized into 3 types: I, II and III. PKS type III is considered the simplest in its structure. It was believed that PKS type III was exclusively encoded by higher plants until the enduring efforts of bacterial genomes sequencing revealed the presence of more and more PKSs type …
The Sisters Of The Muslim Brotherhood: Islamic Activism For Better Or For Worse, Amira Elserafy
The Sisters Of The Muslim Brotherhood: Islamic Activism For Better Or For Worse, Amira Elserafy
Theses and Dissertations
This study is meant to tell the story of the Muslim Brotherhood Sisters (Al-Akhawat Al-Muslimat) in urban Cairo, Egypt. It mainly attempts to answer two questions: (1) what motivates the Sisters’ Islamic activism within the Brotherhood and within the Egyptian society at large despite its huge risks? (2) how do they (re)construct, contest and relate to the gender ideology of the Muslim Brotherhood? Relying on ethnographic fieldwork, this study explores the ways through which the Sisters of the Muslim Brotherhood conceptualize their engagement in Islamist politics amid the crackdown of 2013. Through examining the Muslim Brotherhood’s contexts, contention repertoires and …
Participation Of 414dddd417 And 432kpar435 In The Thermostability Of Mercuric Reductase Isolated From The Deep Brine Environment Of Atlantis Ii In The Red Sea, Ayman Eid
Theses and Dissertations
Mercuric reductase (MerA) is an essential enzyme for the survival of microorganisms that reside in environments containing mercuric compounds. The enzyme converts the extremely toxic mercuric ions (Hg2+) into the less toxic volatile elemental mercury form (Hg0). A novel MerA molecule that has undergone multiple evolutionary adaptations to allow its host to cope with the harsh multiple abiotic stressors of the lower convective layer (LCL) of the Atlantis II (ATII) brine environment in the Red Sea has been recently characterized catalytically and structurally (JBC, 2014, 289,1675–1687). The brine pool at Atlantis II Deep covers an area of about 60 km2 …
Functional Identification Of A Ligase In The Red Sea Atlantis Ii Deepest Layer, Mahera Mohammed
Functional Identification Of A Ligase In The Red Sea Atlantis Ii Deepest Layer, Mahera Mohammed
Theses and Dissertations
Red sea, described as one of the unique marine ecosystems, incorporates up to 25 deep-sea brine pools. These pools posses multiple extreme conditions influencing the evolution and survival of their inhabiting microbial community. The combination of maximum depth (2194 m), high temperature (68C), anoxia, high salinity (26%), high pressure and high concentrations of heavy metals in the lower convective layer (LCL) of the Atlantis II brine pool makes it an ideal environment for identification of novel enzymes with unique characteristics and potential biotechnological applications. Here we describe the identification and the preliminary in vivo functional investigation of the ligase domain …
A Method Of Correction For The Effect Of Optical Traps In Equilibrium Microrheology Experiments, Elhassan Elsabry
A Method Of Correction For The Effect Of Optical Traps In Equilibrium Microrheology Experiments, Elhassan Elsabry
Theses and Dissertations
Optically trapped dielectric particles experience a linear restoring force due to the trapping laser beam for small displacements of the trapped beads from the center of the optical trap. The optical force adds an apparent contribution to the measured shear elastic modulus of the solution in microrheology experiments. Traditional methods of correcting for the effect of the trap and obtaining the true shear elastic modulus of the solution involved taking measurements in separate purely viscous solutions using similar but not identical trapped beads under the same experimental conditions. A new method is proposed in this research to do this correction. …
Invisible Contributors In The Economy: The Case Of Domestic Workers In Egypt, Noha Saad Zaghloul
Invisible Contributors In The Economy: The Case Of Domestic Workers In Egypt, Noha Saad Zaghloul
Theses and Dissertations
This research aims to explore the multidimensional problem of Domestic Workers in Egypt. Domestic Workers in Egypt lack the necessary legal protection, which in turn reflects on the absence of all forms of social protection for them and their families. In addition, the social stigma associated with the profession contributes to the violations against the workers of this sector who are mostly women coming mainly from low-socio economic backgrounds. This research focuses on women Domestic Workers, who live in slum communities in Cairo, many of whom are rural-urban migrants. It explores their challenges and their survival techniques used to face …
Transcriptomics Of Iron Limitation In Phaeocystis Antarctica, Mariam Reyad Rizkallah Issak
Transcriptomics Of Iron Limitation In Phaeocystis Antarctica, Mariam Reyad Rizkallah Issak
Theses and Dissertations
Phytoplankton, the hidden trees of the ocean, are responsible for nearly half of global oxygen production. Phytoplankton growth and productivity in high-nitrate low-chlorophyll (HNLC) regions have been demonstrated to be limited by iron availability. One of the most important HNLC regions is the Southern Ocean, as it regulates Earth system climate due to its unique hydrography and consequently its phytoplankton assemblage drives the global carbon cycle. Iron fertilization experiments were conducted to understand the response of its photosynthetic assemblage to iron addition, and the nanoflagellate Phaeocystis antarctica has been reported the first to bloom. P. antarctica is ecologically important due …
Towards The Characterization Of A Novel Thermohalophilic Antioxidant Thioredoxin From The Metagenome Of The Red Sea; Lcl Of Atlantis Ii Brine Pool, Mohamed Mohamed Gamal Abdelwahed
Towards The Characterization Of A Novel Thermohalophilic Antioxidant Thioredoxin From The Metagenome Of The Red Sea; Lcl Of Atlantis Ii Brine Pool, Mohamed Mohamed Gamal Abdelwahed
Theses and Dissertations
Due to the crucial antioxidant role of Thioredoxin (Trx) system in various vital cellular processes; DNA synthesis, oxidative stress defense, protein folding, apoptosis and cell growth, this fundamental system is widely expressed in mostly all life's kingdoms. Thus using metagenomic approaches to characterize novel Trx system in unexplored harsh environment will open the window for understanding the evolution of Trx system and its unique adaptation in extreme habitations. One of the unexplored unique ecosystems is the Red Sea's Atalntis II brine pool, specifically, the lower convective layer (LCL). The exceptional harsh conditions of the LCL; anoxic condition, high temperature around …
The Impact Of Nutrition And Feeding Time On The Regulation Of Gene Expression In The Central Circadian Clock Of Drsosophila Melanogaster, Arwa Diab
Theses and Dissertations
The circadian clock plays an essential role in most organisms by allowing their adaptation to the daily environmental changes mainly light/dark cycles and also temperature. Circadian rhythms persist in constant conditions indicating an auto regulatory molecular circadian clock. Here, we investigated the possibility that the circadian clock of Drosophila can also be entrained by scheduled feeding. Cycles of 12 hours feeding and 12 hours starvation could entrain the molecular circadian oscillation in key pacemaker neurons of Drosophila. Clock proteins CLOCK (CLK) and PERIOD (PER) showed a 24 hour oscillation in the small and large ventral lateral neurons after entrainment by …
The Perception Of Emotion From Acoustic Cues In Natural Speech, John Snel
The Perception Of Emotion From Acoustic Cues In Natural Speech, John Snel
Doctoral
Knowledge of human perception of emotional speech is imperative for the development of emotion in speech recognition systems and emotional speech synthesis. Owing to the fact that there is a growing trend towards research on spontaneous, real-life data, the aim of the present thesis is to examine human perception of emotion in naturalistic speech. Although there are many available emotional speech corpora, most contain simulated expressions. Therefore, there remains a compelling need to obtain naturalistic speech corpora that are appropriate and freely available for research. In that regard, our initial aim was to acquire suitable naturalistic material and examine its …