检索结果-南通市图书馆

Impact of cold on the immune system of burying beetle, Nicrophorus vespilloides （Coleoptera： Silphidae）

Insect Science 2017年第3期24卷 443-454页

作者： Arkadiusz Urbanski Elzbieta Czarniewska edward Baraniak Grzegorz Rosinski Department of Systematic Zoology Department of Animal Physiology and Development Faculty of Biology Adam Mickiewicz University Poznan Poland

Insect overwintering is one of the most astonishing phases of the insect life cycle. Despite vast amounts of knowledge available about the physiological mechanisms of this phenomenon, the impact of stress factors on insect immune system functioning during the winter is still unknown. The aim of this study is to analyze how low temperatures influence the immune system of the beetle Nic＇rophorus vespilloides. The results show that the beetle＇s immune system is differently modulated by cold induced in laboratory settings than that which occurs in natural conditions, Among beetles cultured in conditions similar to summer, low temperatures, did not influence the number of circulating haemocytes, phenoloxidase activity, haemocytes morphology, and percentage ratio of haemocyte types. In these beetles, differences were noted only in the ability of haemocytes to perform phagocytosis. Individuals acclimated in natural conditions in autumn had a higher level of humoral response and a different percentage ratio of haemocyte types. During the winter period, the number of haemocytes in the beetles decreased, but the percentage ratio of phagocytic haemocytes increased. Furthermore, we noted an increase of phenoloxidase activity. Our study also showed mitotic divisions ofhaemocytes in haemolymph collected from burying beetles after cold exposure and from burying beetles collected from natural conditions during autumn and winter. Differences in response to low temperatures in laboratory conditions and the natural environment suggest that the simultaneous presence of other stress factors during winter such as desiccation and starvation have a significant influence on the activity of burying beetle＇s immune system.

关键词： burying beetles cold immune system overwintering phagocytosisphenoloxidase

来源：

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

High efficiency synthesis of HKUST-1 under mild conditions with high BET surface area and CO2 uptake capacity

引用

Progress in Natural Science:Materials International 2018年第5期28卷 584-589页

作者： Yipei Chen Xueliang Mu edward Lester Tao Wu New Materials Institute The University of Nottingham Ningbo China Department of Chemical and Environmental Engineering The University of Nottingham Municipal Key Laboratory of Clean Energy Conversion Technologies The University of Nottingham Ningbo China

This study focuses on the development of a hydrothermal method for the rapid synthesis of good quality copper benzene-1,3,5-tricarboxylate（referred to as HKUST-1）with high yield under mild preparation conditions to address the issues associated with reported *** synthesis conditions and activation methods were studied to understand their influence on the properties of *** was found that mixing the precursors at50°C for 3 h followed by activation via methanol refluxing led to the formation of a product with the highest BET specific surface area of 1615 m2/g and a high yield of 84.1%.The XRD and SEM data illustrated that the product was highly *** sample was also tested on its capacity in *** results showed strong correlation between surface area of the sample and its CO2uptake at 1 bar and 27°*** HKUST-1 prepared in this study demonstrated a high CO2uptake capacity of 4.2 mmol/*** is therefore concluded that this novel and efficient method can be used in the rapid preparation of HKUST-1 with high surface area and CO2uptake capacity.

关键词： Metal organic framework HKUST-1 Rapid synthesis Green synthesis CO2 adsorption

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Load forecasting for diurnal management of community battery systems

引用

Journal of Modern Power Systems and Clean Energy 2018年第2期6卷 215-222页

作者： Peter WOLFS Kianoush EMAMI Yufeng LIN edward PALMER School of Engineering and Technology Central Queensland University

This paper compares three methods of load forecasting for the optimum management of community battery storages. These are distributed within the low voltage(LV) distribution network for voltage management,energy arbitrage or peak load reduction. The methods compared include: a neural network(NN) based prediction scheme that utilizes the load history and the current metrological conditions; a wavelet neural network(WNN)model which aims to separate the low and high frequency components of the consumer load and an artificial neural network and fuzzy inference system(ANFIS) *** batteries have limited capacity and have a significant operational cost. The load forecasts are used within a receding horizon optimization system that determines the state of charge(SOC) profile for a battery that minimizes a cost function based on energy supply and battery wear costs. Within the optimization system, the SOC daily profile is represented by a compact vector of Fourier series coefficients. The study is based upon data recorded within the Perth Solar City high penetration photovoltaic(PV)field trials. The trial studied 77 consumers with 29 rooftop solar systems that were connected in one LV network. Data were available from consumer smart meters and a data logger connected to the LV network supply transformer.

关键词： Load forecasting Photovoltaic Battery Receding horizon optimization Neural network Wavelet Fuzzy inference

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Bednets or Biotechnology:To Rescue Current Persons or Research for the Future?

引用

Fudan Journal of the Humanities and Social Sciences 2020年第4期13卷 559-572页

作者： Daniel edward Callies Institute for Practical Ethics University of CaliforniaSan DiegoUSA Encinitas USA

Malaria is still a significant cause of death and suffering throughout much of the developing ***,the global community provides significant(though,not sufficient)resources to combat the disease and the parasite that causes *** ought we to allocate these resources?One option is to purchase and distribute perhaps the best tool we have to prevent malaria:insecticide-treated *** route would see us invest in research and development of a novel biotechnology that could eradicate the disease in *** we choose to spend our money on insecticidetreated nets,we will be rescuing current individuals at risk of being infected with the ***,we can be almost certain there will be future individuals who will also need *** we instead invest in the novel biotech no logy,we could benefit countless future individuals who never have to experience the threat of ***,this would mean that some number of current individuals will die due to the lack of insecticide-treated nets that otherwise could have saved their ***,ought we to rescue current,identifiable individuals,or ought we invest in research for the sake of the future?After an exploration of the duty to rescue and cost-effectiveness analysis,I suggest we look towards the literature on intergenerational justice for a justifiable answer to the question of how we ought to allocate our malaria resources.

关键词： Malaria Gene drive Cost-efFectiveness analysis Intergenerational justice Rule of rescue

来源：

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

High energy neutron and pion-decay gamma-ray emissions from solar flares

引用

Chinese Journal of Astronomy and Astrophysics 2009年第1期9卷 11-40页

作者： edward L.Chupp James M.Ryan Physics Department and Space Science Center in the Institute for the Study of Earth Oceans and Space University of New Hampshire

Solar flare gamma-ray emissions from energetic ions and electrons have been detected and measured to GeV energies since 1980. In addition, neutrons produced in solar flares with 100 MeV to GeV energies have been observed at the Earth. These emissions are produced by the highest energy ions and electrons accelerated at the Sun and they provide our only direct （albeit secondary） knowledge about the properties of the accelerator（s） acting in a solar flare. The solar flares, which have direct evidence for pion-decay gamma-rays, are unique and are the focus of this paper. We review our current knowledge of the highest energy solar emissions, and how the characteristics of the acceleration process are deduced from the observations. Results from the RHESSI, INTEGRAL and CORONAS missions will also be covered. The review will also cover the solar flare capabilities of the new mission, FERMI GAMMA RAY SPACE TELESCOPE, launched on 2008 June II. Finally, we discuss the requirements for future missions to advance this vital area of solar flare physics.

关键词： Sun -- Flares -- Particle Acceleration-Meson Production

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Virtual screening of inorganic materials synthesis parameters with deep learning

引用

npj Computational Materials 2017年第1期3卷 14-22页

作者： edward Kim Kevin Huang Stefanie Jegelka Elsa Olivetti Department of Materials Science and Engineering MITCambridgeMAUSA Department of EECS and CSAIL MITCambridgeMAUSA

Virtual materials screening approaches have proliferated in the past decade,driven by rapid advances in first-principles computational techniques,and machine-learning *** comparison,computationally driven materials synthesis screening is still in its infancy,and is mired by the challenges of data sparsity and data scarcity:Synthesis routes exist in a sparse,highdimensional parameter space that is difficult to optimize over directly,and,for some materials of interest,only scarce volumes of literature-reported syntheses are *** this article,we present a framework for suggesting quantitative synthesis parameters and potential driving factors for synthesis *** use a variational autoencoder to compress sparse synthesis representations into a lower dimensional space,which is found to improve the performance of machine-learning *** realize this screening framework even in cases where there are few literature data,we devise a novel data augmentation methodology that incorporates literature synthesis data from related materials *** apply this variational autoencoder framework to generate potential SrTiO_(3) synthesis parameter sets,propose driving factors for brookite TiO_(2) formation,and identify correlations between alkali-ion intercalation and MnO_(2) polymorph selection.

关键词： synthesis variational inorganic

来源：

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

The ascent of immune checkpoint inhibitors： is the understudy ready for a leading role？

引用

Cancer Biology & Medicine 2017年第4期14卷 341-347页

作者： Amy L. Cummings edward B. Garon Department of Hematology and Oncology David Geffen School of Medicine at the University of California Los Angeles 90095 USA

The recent approval of pembrolizumab as second-line treatment for any solid tumor with high-level microsatellite instability or mismatch repair deficiency agnostic of tissue and origin1 has shattered a glass ceiling for immune checkpoint *** longer bound to a specific cancer diagnosis but rather a biomarker,pembrolizumab has heightened a burgeoning optimism towards the drug *** how these agents should carve out additional

关键词： PD The ascent of immune checkpoint inhibitors:is the understudy ready for a leading role PFS OS ORR IHC

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Hydrophilic surface modification of PDMS for droplet microfluidics using a simple,quick,and robust method via PVA deposition

引用

Microsystems & Nanoengineering 2017年第1期3卷 323-331页

作者： Tatiana Trantidou Yuval Elani edward Parsons Oscar Ces Department of Chemistry Imperial College LondonLondon SW72AZUK Institute of Chemical Biology Imperial College LondonLondon SW72AZUK London Centre for Nanotechnology University College LondonLondon WC1E 6BTUK

Polydimethylsiloxane(PDMS)is a dominant material in the fabrication of microfluidic devices to generate water-in-oil droplets,particularly lipid-stabilized droplets,because of its highly hydrophobic ***,its key property of hydrophobicity has hindered its use in the microfluidic generation of oil-in-water droplets,which requires channels to have hydrophilic surface *** this article,we developed,optimized,and characterized a method to produce PDMS with a hydrophilic surface via the deposition of polyvinyl alcohol following plasma treatment and demonstrated its suitability for droplet *** proposed method is simple,quick,effective,and low cost and is versatile with respect to surfactants,with droplets being successfully generated using both anionic surfactants and more biologically relevant *** method also allows the device to be selectively patterned with both hydrophilic and hydrophobic regions,leading to the generation of double emulsions and inverted double emulsions.

关键词： double emulsions droplet microfluidics hydrophobic hydrophilic PDMS surface modification

来源：

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

A neural network protocol for predicting molecular bond energy

引用

Science China Chemistry 2019年第12期62卷 1698-1703页

作者： Chao Feng edward Sharman Sheng Ye Yi Luo Jun Jiang Hefei National Laboratory for Physical Sciences at the Microscale Department of Chemistry and Materials ScienceUniversity of Science and Technology of ChinaHefei 230026China Department of Neurology University of CaliforniaIrvineCalifornia 92697USA

Molecular bond energy is a key parameter for analyzing the properties of chemical activity,stability and *** bond energy is a challenge due to the cost of first-principles simulations and unsatisfactory prediction using empirical *** we show that a neural network(NN)machine-learning method can achieve quick prediction of bond energies of organic *** atomic species and charge information as descriptors,we trained a NN protocol and applied it to predict the bond energy in a certain chemical bond that agreed with density functional theory *** protocol also provided a way to evaluate the effects of different methods of atomic charge analysis on NN *** to accurately estimate bond energies,this NN protocol provides a cost-effective tool for optimizing chemical reactions,accelerating molecular design,and other important applications.

关键词： bond energy neural network density functional theory

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

GREEN SITE DESIGN:STRATEGIES FOR STORM WATER MANAGEMENT

引用

Journal of Green Building 2007年第4期2卷 46-56页

作者： edward A.Cook School of Architecture and Landscape Architecture College of DesignArizona State UniversityTempeArizonaUSA 85287-1605

INTRODUCTION Increasingly,proponents of green building are realizing the potential of green site development strategies on the future sustainability of urbanized *** particular,alternative strategies for stormwater management are being implemented and show significant promise(US EPA 2003).As the global population becomes more urban,the increase of impermeable surfaces has deleterious effects on water quality and amounts of urban *** approaches to development and stormwater management have resulted in stormwater systems becoming a rapid conduit for delivery of contaminated runoff to rivers and *** have increased,concentration times reduced,and natural filtering processes have been *** result is increased flooding,polluted rivers and streams,health threats,habitat degradation,and increasing expense to maintain inadequate *** municipalities and other government agencies in the US and abroad are attempting to address this issue through regulation and *** United States Green Building Council leeD system recognizes and addresses this problem and the potential for more sustainable stormwater management practices.

关键词： runoff storm leeD

来源：

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

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：