检索结果-南通市图书馆

Plant Diversity 2022年第3期44卷 243-254页

作者： Aabid Hussain mir Kiranmay Sarma Krishna Upadhaya Department of Environmental Studies North-Eastern Hill UniversityShillong793022MeghalayaIndia University School of Environment Management Guru Gobind Singh Indraprastha UniversityDwarka 16CNew Delhi110075India Department of Basic Sciences and Social Sciences North-Eastern Hill UniversityShillong793022MeghalayaIndia

In the state Meghalaya,northeast India,>80%of the forest lands are owned by local communities and managed by traditional *** forests are under severe threats due to a number of human *** present study was conducted to assess the plant diversity and identify the community forests for priority conservation in Khasi Hills of *** explorations carried out in the 87 forests reveals the presence of 1300 plant species of which 400 are either rare,endemic or *** the different forest categories,reserve forests had the highest number of species(1190),followed by sacred forests(987 species)and village forests(786 species).Majority of the forests(56)had high-species richness,irreplaceability level(42 forests)and vulnerability level(54).In terms of area,13.8%(1666.8 ha)fall under low risk while 1855 ha under high risk *** risk zone was mostly represented by village *** area of 7661.56 ha of community forests falls under high priority category and hence calls for immediate conservation *** conservation priority map generated in the present study will help to concentrate the protection strategy to the demarcated and adjoining areas and help conservationists and planners to evolve effective strategies for conservation of the community forests.

关键词： Conservation Disturbance Endemic Rare Threatened Village forest

RIVER SYSTEM AND DISTURBANCE FACTORS IN THE LAKE TOBA

在线全文

学校读者我要写书评

暂无评论

湿地科学 2004年第2期2卷 104-109页

作者： zulkifli Nasution Mashhor Mansor Faculty of Agriculture Universitas of Sumatera Utara Medan IndonesiaSchool of Biological Sciences University of Sains Malaysia 11800 Penang Malaysia

Situated at an elevation of 905 m above sea level in the Province of North Sumatra, Lake Toba and its surrounding landscapes are regarded as a natural heritage in a certain extent, as a quoted national treasure. Unfortunately degradation of the land and water resources in the watershed along Lake Toba is taking place at an alarming and totally unacceptable rate. The quality of the lake is partly depended on input the quality of the rivers. When compared to the control area the water quality that influenced by the piggeries are highly polluted. It can be concluded that the Salbe River at the downstream of the piggeries has been polluted and apparently it is a serious problem to the catchment area management. It should be noted that the polluted river would influence the water quality of the Lake Toba. Based on calculation, the permissible BOD 5 according to B-river standard is 238 mg/L, it means the river still in B standard but the condition and quality are decreasing continuously. Following the Indonesian health standard the permissible BOD is - 461 mg/L. It means BOD in the river should be reduced 461 mg/L or clean program is needed.

关键词：湖泊水环境环境保护水质

Hyperinsulinemia,cancer and maqui berry:The promise of nutritional supplementation

在线全文

学校读者我要写书评

暂无评论

Food Science and Human Wellness 2019年第3期8卷 264-267页

作者： Brett Deters mir Saleem Halmos College of Natural Sciences and Oceanography NOVA Southeastern UniversityFort LauderdaleFL 33314USA

Nutritional supplementation has long been studied as a possible treatment alternative or as an adjunct to the standard treatments for common ailments and *** to the latest research,the Chilean maqui berry,Aristotelia chilensis,has been shown to reduce postprandial insulin levels by as much as fifty *** berry,which has been shown to be as effective as metformin at increasing insulin sensitivity and controlling blood glucose levels,follows a simple mechanism of action that involves the inhibition of sodium dependent glucose transporters in the small intestine,slowing the rate at which sugars enter the bloodstream and thereby decreasing blood sugar spikes and the corresponding increase in insulin *** high blood glucose levels have been proven to play a significant role in the development of cancers,as diabetics and prediabetics have been proven to have elevated risk of developing cancerous *** dietary supplementation with maqui berry may therefore indirectly reduce the risk of cancer,as well as other diseases which respond negatively to hyperglycemia and hyperinsulinemia.

关键词： Hyperinsulinemia Cardiovascular disease Diabetes Insulin Maqui berry Cancer

Magnetizations and magneto-transport properties of Ni-doped PrFeO_3 thin films

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2014年第4期23卷 608-615页

作者： Feroz A.mir S.K.Sharma Ravi Kumar University Science Instrumentation Center University of Kashmir Instituto de Fisica Gleb Wataghin Universidade Estadual de Campinas (UNICAMP) CMSE National Institute of Technology

The present study reports the magnetizations and magneto-transport properties of PrFel_xNixO3 thin films grown by pulsed laser ablation technique on LaA103 snbstrates. From DC M/H plots of these films, weak ferromagnetism or ferrimagnetism behaviors are observed. With Ni substitution, reduction in saturation magnetization is also seen. With Ni doping, variations in saturation field （Hs）, coercive field （Hc）, Weiss temperature （0）, and effective magnetic moment （Pelf） are seen. A small change of magnetoresitance with application of higher field is observed. Various essential parameters like density of state （Nf） at Fermi level, Mott＇s characteristic temperature （To）, and activation energy （Ea） in the presence of and in the absence of magnetic field are calculated. The present observed magnetic properties are related to the change of Fe-O bond length （causing an overlap between the oxygen p orbital and iron d orbital） and the deviation of the Fe-O-Fe angle from 180~. Reduction of magnetic domain after Ni doping is also explored to explain the present observed magnetic behavior of the system. The influence of doping on various transport properties in these thin films indicates a distortion in the lattice structure and single particle band width, owing to stress-induced reduction in unit cell volume.

关键词： thin films magnetization ferromagnetism ferrimagnetism magneto-transport and distortion

Reconfigurable intelligent surface-aided wireless communications: An overview

在线全文

学校读者我要写书评

暂无评论

Intelligent and Converged Networks 2022年第1期3卷 33-63页

作者： Muhammad zain Siddiqi Talha mir Department of Electronic Engineering Tsinghua UniversityBeijing 100084China Department of Electronic Engineering Faculty of ICTBUITEMSQuetta 87300Pakistan

The reconfigurable intelligent surface(RIS)is an emerging technology,which will hopefully bring a new revolution in wireless *** RIS technology can be deployed in an indoor/outdoor environment to dynamically manipulate the propagation *** RIS consists of a large number of independently controllable passive elements,and these elements are involved in realizing high passive beamforming *** from the conventional active phased antenna array,there is no dedicated radio-frequency(RF)chain installed at the RIS to perform complex signal processing ***,it does not incur additional noise while retransmitting the incident wave,which is substantially a unique feature from the conventional wireless communication *** advantage of its working principle,RIS has been deployed in various practical *** this tutorial,at first we will review the latest advances in RIS,including the application scenarios such as the system and channel model,the information theoretic analysis,the physical realization and design,key signal processing techniques such as precoding and channel estimation,and ***,we discuss interesting future research problems for the RIS-aided communications.

关键词： reconfigurable intelligent surface(RIS) wireless communications new paradigm

Towards the Design of Ethics Aware Systems for the Internet of Things

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

China Communications 2020年第2期17卷 239-252页

作者： Sahil Sholla Roohie Naaz mir Mohammad Ahsan Chishti Computer Science and Engineering Department National Institute of Technology Srinagar

The Internet of Things promises to offer numerous societal benefits by providing a spectrum of user applications. However, ethical ramifications of adopting such pervasive technology on a society-wide scale have not been adequately considered. Smart things endowed with artificial intelligence may carry out decisions that entail ethical consequences. It is assumed that the functioning of a smart device does not involve any ethical responsibility vis-a-vis its application context. Such a perspective may precipitate situations that endanger essential human values or cause physical or emotional harm. Therefore, it is necessary to consider the design of ethics within intelligent systems to safeguard human interests. In order to address these concerns, we propose a novel method based on Boolean algebra that enables a machine to exhibit varying ethical behaviour by employing the concept of ethics categories and ethics modes. Such enhancement of smart things offers a way to design ethically compliant smart devices and paves way for human friendly technology ecosystems.

关键词： Boolean ethics aware ethical design Internet of Things

Mapuche People:Valuing a Colonial Past in the Official Primary History Textbook from an Intermodal Perspective of Historical Sources

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

外国语 2021年第1期44卷 41-63页

作者： Teresa Oteíza Pontifical Catholic University of Chile SantiagoChile

This article explores from an intermodal perspective how visual and verbal historical documents contribute to the construction of value positions regarding the Mapuche people during colonial and early republican times in the latest official 5 thgrade primary Chilean History *** study analyzes,in particular,the visual and verbal historical secondary sources that build in combination evaluative prosodies that in turn contribute to construct determinate ideological perspectives regarding Mapuche *** discourse analysis takes a social and ideological intermodal approach(Oteíza&Pinuer 2016,2019)focusing on an appraisal analysis(Martin&White 2005;Martin2014;Hood 2010;Oteíza&Pinuer 2012,2019)informed by socio-semiotic and Systemic Functional Linguistics *** cumulative intersemiotic reading of symbolic images and written documents privileges evaluative prosodies of negative integrity and of high conflict,in which Mapuche people are represented with more agency than Hispanics,emphasizing the stereotype of indigenous people as foreign,exotic and brave warriors,but also as violent,primitive and savage people that have had resisted Hispanic desires of slavering and cultural *** secondary sources offer alternative historical interpretations,although mainly constructed by evoked evaluations that could be less evident to children.

关键词： appraisal analysis intermodal analysis historical evidence History textbooks Mapuche people

The role of glutamine in supporting gut health and neuropsychiatric factors

在线全文

学校读者我要写书评

暂无评论

Food Science and Human Wellness 2021年第2期10卷 149-154页

作者： Brett J.Deters mir Saleem Halmos College of Natural Sciences and Oceanography NOVA Southeastern UniversityFort LauderdaleFL 33314 USA

Recent research has shown that the amino acid glutamine can positively affect gut health by supporting the gut microbiome,gut mucosal wall integrity,and by modulating infiammatory *** modulated by the vagus nerve,via the enteric nervous system,the gut-brain connection can impact the brain’s neurochemical *** gut health can disrupt the balance of neurotransmitters,which can result in neuropsychiatric based conditions such as *** supplementation may provide significant adjunctive nutritional support in cases of depression by promoting proper gut health and function.

关键词： Glutamine Gut Neuropsychiatry Enteric nervous system Neurotransmitters Microbiome

Weighted ebyev-Ostrowski type inequalities

在线全文

学校读者我要写书评

暂无评论

Applied Mathematics and Mechanics(English Edition) 2007年第7期28卷 901-906页

作者： Arif Rafiq Nazir Ahmad mir Farooq Ahmad Mathematics Department COMSATS Institute of Information TechnologyIslamabad 44000Pakistan Centre for Advanced Studies in Pure and Applied Mathematics Bahanddin Zakariya UniversityMultan 60800Pakistan

In account of the famous Cebysev inequality, a rich theory has appeared in the literature. We establish some new weighted Cebysev type integral inequalities. Our proofs are of independent interest and provide new esti... 详细信息

关键词： Cebysev type inequalities L∞ (a b) spaces absolutely continuous functions weight functions

在线全文

学校读者我要写书评

暂无评论

基于激光雷达的果园沟型测量平台设计与试验

农机化研究 2024年第3期46卷 62-69,75页

作者：吴岩峰坎杂戚江涛周馨曌李亚萍石河子大学机械电气工程学院新疆石河子832000 农业部西北农业装备重点实验室新疆石河子832000

针对现有检测开沟质量效率低、精度差等问题,设计了一套由激光雷达、编码器、便携式计算机和支架等构成的非接触式果园开沟宽度深度监测平台,基于编码器获取测量平台前行方向位移,并与上位机软件形成整套采集系统,可快速获取果园沟型三... 详细信息

针对现有检测开沟质量效率低、精度差等问题,设计了一套由激光雷达、编码器、便携式计算机和支架等构成的非接触式果园开沟宽度深度监测平台,基于编码器获取测量平台前行方向位移,并与上位机软件形成整套采集系统,可快速获取果园沟型三维坐标。为了降低外部环境对点云数据处理的影响,采用直通滤波进行果园沟型的有效区域选取,借助MatLab获取其三维点云模型,实现对果园开沟沟形的重构与沟深、沟宽数据的监测。通过重构沟型参数与实测参数对比分析可知:两者宽度相关系数为0.83,均方根误差为0.008,相对误差为2.47%;深度相关系数为0.75,均方根误差为0.009,相对误差为2.76%。研究结果表明:重构沟型参数与实际沟型参数吻合度较高,可精确反映原有沟型形貌特征,为智慧农业果园开沟质量智能检测的构建提供了参考。

关键词：果园激光雷达沟型测量三维重建点云