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Characteristics of newly-formed cementum following emdogain application

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International Journal of Oral Science 2011年第1期3卷 21-26页

作者： Khalid al-Hezaimi Mansour al-Askar Abdulaziz al-Rasheed Eng.A.B.Bagshan Growth Factors and Bone Regeneration Research Chair King Saud UniversityRiyadhSaudi Arabia Department of Periodontology School of Dentistry King Saud UniversityRiyadh Saudi Arabia Eng.A.B.Bagshan Growth Factors and Bone Regeneration Research Chair King Saud UniversityRiyadh Saudi Arabia Department of Periodontology School of Dentistry King Saud UniversityRiyadhSaudi Arabia

Periodontal regenerative techniques have been proposed; however, the outcomes remain debatable. The present investigation assessed the regenerated cementum following enamel matrix derivative application in dehiscence-type defects. Buccal osseous dehiscences were surgically created on the maxillary cuspid, and the second and fourth premolars in five female beagle dogs. The treatment group （n=15 sites） received the enamel matrix derived application, whereas the control groups （n=15） did not. The dogs were sacrificed 4 months following treatment and the specimens were histologically and histometrically examined. The newly formed cementum was uneven in thickness and mineralization, overlapped the old cementum and exhibited functional orientation, cementocyte lacunae and collagen fibril bundles. Most of the histological specimens showed the presence of a gap between the newly formed cementum and the underlying dentin. Control sites did not exhibit any cementum formation. The present study concluded that newly formed cementum is of cellular type and exhibits multiple characteristics.

关键词： regeneration cementum enamel matrix protein

Investigation for Uranium Dispersion Adjacent to Cretaceous Phosphatic Outcrops in al-Nassrieh Basin, Southern Palmyrides, Syria

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Journal of Earth Science 2016年第5期27卷 786-795页

作者： Mohamed al-Hilal Ahmad al-ali Department of Geology the Atomic Energy Commission of Syria (AECS)

A detailed radiometric survey including soil gas radon measurements and field gammaray survey, in accordance with geochemical and geological investigations were carried out in alNassrieh Basin（central Syria）, for the purpose of uranium exploration. Thirty-six samples were collected from various lithofacies of the survey area and analyzed by γ-ray spectrometric technique for determining the concentration values of major radioelements. The relationships between the concentrations of equivalent e U, e Th, and their ratios were examined in order to define their trend of variations and evaluate the degree of uranium remobilization and redistribution. although the initial results indicate that uranium enrichment is mostly restricted to the Upper Cretaceous phosphate rocks, a considerable portion of uranium appeared to be leached out of the primary phosphatic source and dispersed in the adjacent recent sediments. Further, notable increases of radon level associated with relatively high values of uranium concentration and gamma count rates were found to be spatially correlated with the transition zone between the marine Paleogene and continental Neogene formations throughout the study basin. This observation demonstrates the importance of the concerned zone as a suitable geological environment for hosting probable uranium mineralization along a chemically reducing interface where surface water of terrestrial and marine origin mingled at depth and away from surficial conditions.

关键词： radiometric survey geochemistry uranium exploration AI-Nassrieh Basin Syria.

Soil substrate as a cascade of capillary barriers for conserving water in a desert environment:lessons learned from arid nature

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Journal of Arid Land 2014年第6期6卷 690-703页

作者： ali al-MAKTOUMI Said al-ISMAILY Anvar KACIMOV Hamed al-BUSAIDI Said al-SAQRI Mansour al-HADABI Department of Soils Water and Agricultural EngineeringSultan Qaboos UniversityPO Box 34 Al Khoud 123MuscatSultanate of Oman EcOman Centre Petroleum Development Oman LLC PO Box 81MuscatSultanate of Oman

Interaction between soil pedogenesis, subsurface water dynamics, climate, vegetation and human ingenuity in a desert environment has been found to result in a unique ecohydrological system with an essentially three dimensional sedimentation structure in the bed of a recharge dam in Oman. A 3-D array of silt blocks sand- wiched by dry sand-filled horizontal and vertical fractures was studied in pot experiments as a model of a natural prototype. Pots are filled with a homogenous sand-silt mixture （control） or artificially structured （smart design, SD） soil substrates. Rhodes grass and ivy （Ipomea, Convolvulaceae） were grown in the pots during the hottest season in Oman. Soil moisture content （SMC） was measured at different depths over a period of 20 days without irrigation. SD preserved the SMC of the root zone for both ivy and grass （SMC of around 25%-30% compared to 〈10% for control, 3 days after the last irrigation）. Even after 20 days, SMC was around 18% in the SD and 7% in the control. This, similar to the case of a natural prototype, is attributed to the higher upward capillary movement of water in control pots and intensive evaporation. The capillary barrier of sand sheaths causes discontinuity in moisture mi- gration from the micro-pores in the silt blocks to sand pores. The blocks serve as capillarity-locked water buffers, which are depleted at a slow rate by transpiration rather than evaporation from the soil surface. This creates a unique ecosystem with a dramatic difference in vegetation between SD-pots and control pots. Consequently, the Noy-Meir edaphic factor, conceptualizing the ecological impact of 1-D vertical heterogeneity of desert soils, should be generalized to incorporate 3-D soil heterogeneity patterns. This agro-engineering control of the soil substrate and soil moisture distribution and dynamics （SMDaD） can be widely used by desert farmers as a cheap technique, with significant savings of irrigation water.

关键词： soil capillary barrier infiltration soil heterogeneity ecohydrology hydropedology plant root soil moisture content

Ecological connectivity in fragmented agricultural landscapes and the importance of scattered trees and small patches

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Ecological Processes 2021年第1期10卷 274-289页

作者： Darrel Chin Fung Tiang Andrew Morris Mathew Bell Christopher NGibbins Badrul azhar alex MLechner School of Environmental and Geographical Sciences University of Nottingham MalaysiaJalan Broga43500 SemenyihSelangorMalaysia MidCoast Council 2 Biripi WayTareeNSW 2430Australia Faculty of Forestry&Environment Universiti Putra Malaysia43400 SerdangSelangorMalaysia Lincoln Centre for Water and Planetary Health School of GeographyUniversity of LincolnLincoln LN67TSUK

Background:Fragmentation and habitat loss can restrict species movement and reduce connectivity,negatively impacting *** the overall connectivity of an area can inform better management of human modified *** connectivity modelling methods seldom incorporate fine-scale movement patterns associated with movement between fine-scaled structural connectivity elements such as scattered trees,roadside corridors and small patches of *** study aims to characterise connectivity within the Karuah-Myall catchments,a typical woodland ecosystem that is fragmented by agriculture,using least-cost path analysis and a graph-theoretic approach;it focuses on how fine-scaled vegetation such as scattered trees support *** mapped scattered(and paddock)trees within this agricultural landscape where the main human modified land use was *** modelled connectivity for a general representative woodland species using an interpatch dispersal distance and gap crossing threshold,and resistance from different land cover *** gap crossing distance threshold was used to model movement between fine-scaled vegetation *** compared the least-cost paths modelled with and without scattered ***:Our results show that by excluding scattered trees,least-cost paths across the cleared pasture landscape did not reflect the types of movement patterns typically observed from field studies,such as those associated with a foray-search strategy used by small and medium mammals and *** modelling also shows that the KaruahMyall catchments are well connected and provide value to biodiversity beyond the catchment borders,by connecting coastal vegetation to the Great Eastern Ranges national wildlife corridor ***:Connectivity models that exclude fine-scale landscape features such as scattered trees and small,linear patches risk misrepresenting connectivity *** of regional-scale connectivity can b

关键词： Scattered trees Landscape connectivity Gap crossing Fragmentation Agricultural landscape

Heritability and correlation analysis of morphological and yield traits in genetically modified cotton

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Journal of Cotton Research 2020年第3期3卷 167-175页

作者： REHMAN Abdul MUSTAFA Nida DU Xiongming azhar Muhammad Tehseen Zhengzhou Research Base State Key Laboratory of Cotton BiologyZhengzhou UniversityZhengzhou 450001China Institute of Cotton Research Chinese Academy of Agricultural Sciences/State Key Laboratory ofCotton BiologyAnyang 455000China Department of Plant Breeding and Genetics University of Agriculture FaisalabadFaisalabad 38040Pakistan School of Agriculture Sciences Zhengzhou UniversityZhengzhou 450001China

Background:Cotton is known for fiber extraction and it is grown in tropical and sub-tropical areas of the world due to having hot *** crop has a significant role in GDP of ***,the two-years research was conducted to estimate heritability and association among various yield contributing parameters of cotton,i.e.,plant height,number of bolls per plant,number of sympodial branches per plant,seed cotton yield,boll weight,seed index,ginning outturn(GOT),fiber length,fiber strength,and fiber ***:Association analysis revealed that seed cotton yield had a significant positive correlation with plant height,number of bolls per plant,number of sympodial branches per plant,GOT,staple length and fiber *** length and fiber strength were negatively linked with each *** of heritability were high for all of the traits except the number of sympodial branches per plant and boll ***:The parent IUB-222 was found to be the best for plant height,the number of bolls per plant,boll weight,GOT,seed cotton yield,and seed *** genotypes namely,NIAB-414 and VH-367 were identified as the best parents for fiber length,strength,and *** the crosses NIAB-414×IUB-222 was the best for the number of bolls per plant,seed index,seed cotton yield and fiber fineness,whereas,the cross of NIAB-414×CIM-632 was good for plant *** combination of A555×CIM-632 was the best for the number of sympodial branches per plant,boll weight,fiber length,and strength,and VH-367×CIM-632 proved the best for GOT.

关键词： Genetic correlation Genetic variability Inheritance Productivity Upland cotton

Gutmicrobiome modulation:Ancillary effects of inorganic nanoparticles on gut microflora

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BIOCELL 2023年第2期47卷 245-260页

作者： SEHRISH ABBAS BUSHRA UZAIR MAISRA azhar BUTT FARID MENAA BARKAT A.KHAN Department of Biological Sciences International Islamic UniversityIslamabad44000Pakistan Department of Nanomedicine California Innovations CorporationSan DiegoCA92037USA Drug Delivery and Cosmetics Lab(DDCL) GCPSFaculty of PharmacyGomal UniversityDera Ismail Khan29050Pakistan

The association of gut microflora and human health is being increasingly recognized,and the impact of gut microflora on the host is well characterized,including the body’s energy metabolism and immune system *** human diseases,including metabolic,autoimmune,obesity,hypothyroidism,and intestinal disorders,are closely associated with gut *** nanoparticles(NPs)are extensively utilized in numerous fields due to their distinctive,attractive physicochemical *** of the potential impacts of NPs,with a high number of microorganisms inside the human body(microbiota)and its genomes(microbiome),represents one of the most important aspects of *** review article aims to provide information on the association of gut microflora alterations to diseases and describe the impacts of various inorganic NPs,including silver,zinc,selenium,titania,silicon,and copper,on gut *** on the effect of inorganic NPs on gut microflora of animal models and the poultry industry is *** response of pathogenic Enterobacter species to inorganic NPs has been expounded in *** review also highlights the need to focus on the ancillary effects of various inorganic NPs on gut microflora to expedite the suitable advancement of these particles for future ***,the key opportunistic areas for the application of nanotechnology are underlined to manipulate the microbiome of gut dysbiosis,provide an overview,and address potential challenges and our perspective on this evolving field.

关键词： Gut dysbiosis Silver Zinc Selenium Copper nanoparticles

Metabolomics in drug discovery: Restoring antibiotic pipeline

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Asian Pacific Journal of Tropical Biomedicine 2023年第9期13卷 378-383页

作者： Faiza azhar Mariam Busharat Shah Rukh Arshad Chaudhary Zainab Waheed Muhammad Nauman Jamil Department of Pharmaceutical Chemistry Punjab University College of PharmacyUniversity of the PunjabLahorePakistan School of Medical Indigenous and Health SciencesUniversity of WollongongNew South WalesAustralia Department of General Surgery Lahore General HospitalLahorePakistan Department of Pharmaceutical Chemistry Hamza College of PharmacyLahorePakistan

Metabolomics has emerged as a valuable tool in drug discovery and development,providing new insights into the mechanisms of action and toxicity of potential therapeutic *** focuses on the comprehensive analysis of primary as well as secondary metabolites,within biological *** provides a comprehensive understanding of the metabolic changes that occur within microbial pathogens when exposed to therapeutic agents,thus allowing for the identification of unique metabolic targets that can be exploited for therapeutic *** approach can also uncover key metabolic pathways essential for survival,which can serve as potential targets for novel *** analyzing the metabolites produced by diverse microbial communities,metabolomics can guide the discovery of previously unexplored sources of *** review explores some examples that enable medicinal chemists to optimize drug structure,enhancing efficacy and minimizing toxicity via metabolomic approaches.

关键词： Metabolomics Infectious diseases Drug discovery Antibiotics Biomarkers

Deep Learning-Enabled Brain Stroke Classification on Computed Tomography Images

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Computers, Materials & Continua 2023年第4期75卷 1431-1446页

作者： azhar Tursynova Batyrkhan Omarov Natalya Tukenova Indira Salgozha Onergul Khaaval Rinat Ramazanov Bagdat Ospanov al-Farabi Kazakh National University AlmatyKazakhstan International University of Tourism and Hospitality TurkistanKazakhstan Zhetisu University Named After I.Zhansugurov TaldykorganKazakhstan Abai Kazakh National Pedagogical University AlmatyKazakhstan Brunch Center of Excellence in Taldykorgan TaldykorganKazakhstan

In the field of stroke imaging, deep learning (DL) has enormousuntapped *** clinically significant symptoms of a cerebral strokeare detected, it is crucial to make an urgent diagnosis using available imagingtechniques such as computed tomography (CT) scans. The purpose of thiswork is to classify brain CT images as normal, surviving ischemia or cerebralhemorrhage based on the convolutional neural network (CNN) model. In thisstudy, we propose a computer-aided diagnostic system (CAD) for categorizingcerebral strokes using computed tomography images. Horizontal flip datamagnification techniques were used to obtain more accurate *** Data Generator to magnify the image in real time and apply anyrandom transformations to each training image. An early stopping method toavoid overtraining. As a result, the proposed methods improved several estimationparameters such as accuracy and recall, compared to other machinelearning methods. A python web application was created to demonstrate theresults of CNN model classification using cloud development techniques. Inour case, the model correctly identified the drawing class as normal with 79%accuracy. Based on the collected results, it was determined that the presentedautomated diagnostic system could be used to assist medical professionals indetecting and classifying brain strokes.

关键词： Ischemic stroke hemorrhage CNN deep learning classification

Charged Particles Capture Cross-section by a Weakly Charged Schwarzschild Black Hole

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Research in Astronomy and Astrophysics 2024年第8期24卷 141-146页

作者： A.M.al Zahrani A.al-Jama Physics Department King Fahd University of Petroleum and MineralsDhahran 31261Saudi Arabia

We study the capture cross-section of charged particles by a weakly charged Schwarzschild black *** dependence of the maximum impact parameter for capture on the particle’s energy is investigated numerically for different values of the electromagnetic coupling strength between the particle and the black *** capture cross-section is then *** show that the capture cross-section is independent of the electromagnetic coupling for ultra-relativistic *** astrophysical implications of our results are discussed.

关键词： stars black holes-accretion-accretion disks-black hole physics