检索结果-南通市图书馆

维普期刊数据库

Indices to monitor biological soil crust growth rate - lab and field experiments

在线全文

学校读者我要写书评

暂无评论

Natural Science 2011年第6期3卷 478-483页

作者： Avraham Dody Roni Hakmon boaz asaf Eli Zaady Nuclear Research Center-Negev Beer Sheva Israel

The aim of this work was to identify test meth-ods for accelerating growth of biological soil crust (BSC). The BSC in the Yamin Plateau in the north-east of the Negev Desert is composed of cyanobacteria such as microcoleus spp. nostoc spp. and others. Cyanobacteria are well adapted to dry environments, owing to their ability to survive desiccation, high temperatures and solar radiation. Since the BSC is a live component in the ecosystem, it can repair itself in the event of failures such as environmental disturbances by living things. In the lab, we used five different treatments and mediums: natural BSC, pure sand as reference, pure sand with spores and propagules, pure sand with whey, and pure sand with spores and propa-gules and whey. The spores were collected from specified collecting areas in the field. Each Petri dish was irrigated daily with 10 mL of double- distilled water. The testing period ran for 4.5 months with 10 samples taken from each treatment at 1.5 month intervals. The analyses criteria were: NDVI for chlorophyll content by remote sensing techniques, polysaccharide content, infiltration rate through the crust, pro-tein and organic content. The results showed that NDVI, polysaccharides and infiltration rates are good indicators for showing growth accel-eration of the crust;while protein and organic content were found to be less indicative. The treatments using whey for preliminary crust failed in the lab since cracks were observed, but succeeded in the field experiments. In the field, we measured only the chlorophyll content with a time interval of 20 months. The methodology of how to accelerate the growth of BSC was found to be effective.

关键词： Microcoleus Spp Spores NDVI Infiltration Rate Polysaccharides Content

Postnatal therapeutic approaches in genetic neurodevelopmental disorders

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Neural Regeneration Research 2021年第3期16卷 414-422页

作者： Gilad Levy boaz Barak The Sagol School of Neuroscience Tel Aviv UniversityTel AvivIsrael The School of Psychological Sciences Faculty of Social SciencesTel Aviv UniversityTel AvivIsrael

Genetic neurodevelopmental disorders are characterized by abnormal neurophysiological and behavioral phenotypes,affecting individuals *** the subject has been heavily researched,current treatment options relate mostly to alleviating symptoms,rather than targeting the altered genome *** this review,we address the neurogenetic basis of neurodevelopmental disorders,genetic tools that are enabling precision research of these disorders in animal models,and postnatal gene-therapy approaches for neurodevelopmental disorders derived from preclinical studies in the laboratory.

关键词： adeno-associated virus CRISPR-Cas9 developmental window genetic therapy mouse models neurodevelopmental disorders non-human primates preclinical studies

维普期刊数据库

Domestication-related changes in sexual performance of Queensland fruit fly

在线全文

学校读者我要写书评

暂无评论

Insect Science 2021年第5期28卷 1491-1503页

作者： Jeanneth Perez Vivian Mendez boaz Yuval Phillip WTaylor Applied BioSciences Macquarie UniversitySydneyAustralia Australian Research Council Industrial Transformation Training Centre for Fruit Fly Biosecurity Innovation Macquarie UniversitySydneyAustralia Department of Entomology The Hebrew University of JerusalemRehovotIsrael

In Sterile Insect Technique(SIT)programs,massive numbers of insects are reared,sterilized,and released in the field to impede reproduction of pest *** domestication and rearing processes used to produce insects for SIT programs may have significant evolutionary impacts on life history and reproductive *** assessed the effects of domestication on sexual performance of laboratory reared Queensland fruit fly,Bactrocera tryoni,by comparing an old(49 generations)and a young colony(5 generations).We evaluated mating propensity,mating latency,copula duration,sperm transfer,and ability to induce sexual inhibition in ***,both males and females from the old colony had greater mating propensity than those from the young *** duration was longer when females were from the old *** was no evidence of sexual isolation between the colonies as males and females from the two colonies had similar propensity to mate with flies from either *** from the old colony transferred more sperm regardless of which colony their mate was ***,males from both colonies were similarly able to induce sexual inhibition in their mates and were also similarly able to secure copulations with already-mated *** effects of domestication on sperm transfer,coupled with maintained ability to induce sexual inhibition in mates and to secure copulations with previously mated females,highlights that domestication may have little effect,or even positive effects,on some aspects of sexual performance that may advantage mass-reared *** in SIT programs.

关键词： laboratory adaptation mass-rearing Q-fly sexual behavior sterile insect technique

Growth and Solvent Effects of a Promising Nonlinear Optical Sodium Paranitrophenolate Dihydrate (NO_2-C_H_4-ONa·2H_2O) Single Crystal

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2004年第5期20卷 505-508页

作者： B.Milton boaz A.Leyo Rajesh S.Xavier Jesu Raja S.Jerome Das Department of Physics Loyola College Chennai 600 034IndiaDepartment of PhysicsLoyola College Chennai 600 034IndiaDepartment of PhysicsLoyola College Chennai 600 034IndiaDepartment of PhysicsLoyola College Chennai 600 034India

Sodium paranitrophenolate dihydrate (NPNa·2H2O) is an excellent semiorganic nonlinear optical (NLO) material, crystallizes both in water and methanol with high degree of transparency. Good optical quality single crystals of dimension upto 18 mm×6 mm×3 mm are obtained by isothermal solvent evaporation technique. The solubility of the crystal in different solvents was measured gravimetrically. The single crystals of NPNa·2H2O show variation in physical properties and growth rate in different solvents. Methanol or ethanol solution yields crystals of bipyramidal shape with clear morphology. However, methanol grown crystal is exhibiting improved hardness parameters and possesses excellent thermal stability as compared to water grown crystals. The effects of solvent on hardness parameter along with thermal and optical properties of NPNa·2H2O was revealed in this paper.

关键词： Solution grown crystals Semiorganic NLO material Solvent effect Absorption spectra Hardness parameters

维普期刊数据库

General practice trainee,supervisor and educator perspectives on the transitions in postgraduate training:a scoping review

在线全文

学校读者我要写书评

暂无评论

Family Medicine and Community Health 2024年第4期12卷 17-28页

作者： Michael Tran Joel Rhee Wendy Hu Parker Magin boaz Shulruf Discipline of General Practice School of Clinical MedicineUniversity of New South WalesSydneyNew South WalesAustralia School of Medicine Western Sydney UniversitySydneyNew South WalesAustralia Discipline of General Practice School of Medicine and Public HealthThe University of NewcastleNewcastleNew South WalesAustralia Office of Medical Education University of New South WalesSydneyNew South WalesAustralia

Transitions are a period and a process,through which there is a longitudinal adaptation in response to changing circumstances in clinical practice and *** the experience of the transition in medical student learning and in hospital-based specialty training programmes are well described and researched,the experience of the transition in community-based postgraduate general practitioner(GP)training has not been described *** We aimed to identify,and categorise,the formative experiences of transitions in GP training and their impacts on personal and professional *** We adopted Levac et al’s scoping review *** 1543 retrieved records,76 were selected for data *** on a combined model of the socioecological and multiple and multi-dimensional theories of transitions,data relating to the experiences of transitions were organised into contextual themes:being physical,psychosocial,organisational culture and *** criteria Empirical studies focused on general practice trainees or training,that discussed the transitions experienced in general practice training and that were published in English were *** sources PubMed,MEDLINE and Web of Science databases were searched in January 2024 with no date limits for empirical studies on the transition experiences of GP into,and through,*** Our findings describe context-dependent formative experiences which advance,or impede,learning and *** is a significant modulator of the factors contributing to more negative experiences,with some initially adverse experiences becoming more *** of the inflection point that represents a shift from initially adverse to more positive experiences of transitions may help moderate expectations for learning and performance at different stages of *** Challenges in training can either advance development and contribute positively to pr

关键词： finding initially programme

Growth,structural,optical,thermal and dielectric properties of a novel semi-organic nonlinear optical crystal:Dichloro-diglycine zinc Ⅱ

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Progress in Natural Science:Materials International 2014年第4期24卷 378-387页

作者： B.Uma Rajnikant K.Sakthi Murugesan S.Krishnan B.Milton boaz Department of Physics R.M.K.Engineering College X-ray Crystallography Laboratory Post-Graduate Department of Physics & ElectronicsUniversity of Jammu PG and Research Department of Physics Presidency College Department of Physics B.S.Abdur Rehman University

Dichloro-diglycine zinc II(DCDGZ II),a semi-organic nonlinear optical material has been synthesized and single crystals were grown from the aqueous solution up to dimensions 20×10×3 *** title compound,DCDGZ II(C4H10Cl2N2O4Zn H2O) crystallizes into monoclinic structure with the space group of C2/*** unit-cell parameters were found to be a=14.4191(7),b=6.9180(2),c=12.9452(6) and Z=*** the crystal structure,DCDGZ II layer is building up alternatingly with layers of water in which the zinc ions lie on a twofold *** calculations for polarizability,which are useful for device fabrication were made using Clausius–Mosotti equation and Penn analysis and the results were *** transform infrared(FTIR) spectroscopic studies were performed for the identification of the different functional groups presented in the *** UV–vis–NIR absorption spectrum reveals that the lower UV cut-off wavelength is 240 *** optical band gap of the crystal was estimated as 2.2 *** surface morphology,thermal behaviour,dielectric properties have been studied using SEM,TG/DTA and LCR HITESTER *** nonlinear optical property of the crystal was also confirmed using Kurtz powder technique.

关键词： Crystal structure Growth from solutions Characterization Non-linear optic materials

A Holevo-Type Bound for a Hilbert Schmidt Distance Measure

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Quantum Information Science 2015年第4期5卷 127-133页

作者： boaz Tamir Eliahu Cohen Faculty of Interdisciplinary Studies Bar-Ilan University Ramat-Gan Israel H.H. Wills Physics Laboratory University of Bristol Bristol UK School of Physics and Astronomy Tel-Aviv University Tel-Aviv Israel

We prove a new version of the Holevo bound employing the Hilbert-Schmidt norm instead of the Kullback-Leibler divergence. Suppose Alice is sending classical information to Bob by using a quantum channel while Bob is performing some projective measurements. We bound the classical mutual information in terms of the Hilbert-Schmidt norm by its quantum Hilbert-Schmidt counterpart. This constitutes a Holevo-type upper bound on the classical information transmission rate via a quantum channel. The resulting inequality is rather natural and intuitive relating classical and quantum expressions using the same measure.

关键词： Holevo Bound Hilbert-Schmidt Norm Entanglement Measures

Interference Mitigation Techniques Using Receiver Processing and Resource Allocation

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Circuits and Systems 2016年第10期7卷 2893-2903页

作者： Jesvin Veancy boaz Yogesh Palanichamy Department of Electronics and Communication Engineering Easwari Engineering College Chennai India Department of Information Science and Technology Anna University Chennai India

Heterogeneous network consists of the pico cells overlaid over the macro cell coverage area in a wireless cellular network. The pico cells are deployed to increase the capacity of the homogeneous network by reusing the spectrum further. However, more users will tend to be associated to the macro cell due to the fact that the transmit power of the pico cell is low. In order to increase the number of users associated to the pico cell, range extension techniques like biased association are used. This will cause severe interference to cell edge users of the pico cell from the macro cell causing degradation in throughput performance in the cell range extension area. In this paper, interference mitigation using receiver processing along with different scheduling techniques is proposed to improve the throughput, average delay, and the packet delivery ratio performance of the system. The performance comparison of the round robin, proportional fair and modified largest weighted delay first (MLWDF) algorithm for resource allocation using interference suppressing receiver is done, and analyzed. It is shown that the MLWDF algorithm achieves the highest throughput with minimum average delay of packets with the best delivery ratio.

关键词： Cellular Network Orthogonal Frequency Division Multiplexing Interference Scheduling Post Processing Signal to Noise Ratio

Frontal fibrosing alopecia update

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Dermatology 2015年第1期4卷 33-43页

作者： Anna Lyakhovitsky Aviv Barzilai boaz Amichai Department of Dermatology Chaim Sheba Medical Center Tel-Aviv University Sackler School of Medicine Tel Hashomer 52621 Israel Department of Dermatology Meir Medical Center Kfar-Saba Tel-Aviv University Sackler School of Medicine Tel Hashomer 52621 Israel

Frontal fibrosing alopecia(FFA) is a recently described form of primary cicatricial alopecia, characterized by progressive recession of the frontotemporal hairline and eyebrow loss, occurring predominantly in postmenopausal women. The incidence of FFA has increased significantly during the last decade and we may be facing an epidemic of the disease. Because this condition causes permanent hair loss, prompt diagnosis and treatment are essential for obtaining optimal outcome. This article reviews existing knowledge on epidemiology, etiopathogenesis, clinico-histological features, diagnosis,and treatment modalities of FFA.

关键词： Cicatricial alopecia Scarring alopecia Frontal fibrosing alopecia Lichen planopilaris Hair loss