分散环境下基于网络的快速产品开发模式

分散环境下错综复杂的产品开发流程和大量信息 ,限制了产品开发速度。但不管开发过程如何复杂 ,都可以抽象为异步和同步两大类。在此基础上归纳形成了基于网络的产品快速开发的异步同步耦合新模式。异步同步耦合是指异步过程和同步过程相互影响和相互作用 ,整体完成产品开发的任务。同时解决了分布式异步执行的管理过程的可视化技术和实时监控技术 ,构建了支持异地协同的集成环境。

基于分散型农村居住环境的物流配送分析

随着现代农村经济的发展,我国农村地区物流配送的问题日益显著。传统的物流配送模式在农村地区面临着一系列挑战,如地理分散、交通不便、信息不对称等,导致农村居民难以享受到快速、高效的物流服务,影响了农村经济的进一步发展和农民的生活质量。因此,分散型农村居住环境的物流配送问题成为了研究的焦点。文章通过对分散型农村居住环境的物流配送进行分析,提出了合理的优化方案,以期提高物流效率,降低成本,最大限度地满足农村居民的需求。

水分散环境友好型纳米结构漆

吉林大学教授、博士生导师张万喜领导的课题组承担的国家863计划课题"水分散环境友好型纳米结构漆",经过2年的攻关研究已获的重大技术突破和巨大经济效益.

云桌面实验室构建初探

IT技术飞速发展,学院每年更新桌面电脑都投入了大量资金,但使用效率较低,依然满足不了教学发展的需求。为了应对以上的各种挑战,信息化建设正在从PC时代向云时代迈进。桌面云这一应用程序能够利用能够连接网络的任何设备,如客户端等来实现跨平台访问的目标。

惠州市华阳化工紫外光固化涂料获专利

日前，广东惠州市华阳化工有限公司发明的一种紫外光固化涂料获得中国发明专利授权，授权公开号为CN 1255487。该发明涉及水分散环境友好型纳米结构工业漆，包括如下组分：乳胶粒径小于100nm的水分散环境友好型纳米聚合物乳液、软化水、颜料、惰性防锈颜料、活性防锈颜料、填料、催干剂和助剂。本发明无毒，对环境无污染，对施工人员身体健康无害，使用安全方便。

水性纳米结构漆

长春木兰纳米技术有限公司以吉林大学为技术依托，并与香港大学、中科院北化所、中科院长春应用化学所、天津大学、东北大学等高等院校和科研院所紧密合作，承担了国家863计划项目“水分散环境友好型纳米结构漆”的研发，经多年的研究与探索，成功地开发出了国际领先的水性纳米结构漆，

纳米产业始显效益

纳米化聚丙烯酸系高性能水性木器涂料，主要性能指标达到同类油溶性涂料的国家标准，可挥发性有机物含量低。目前，我国已形成了年产万吨的纳米化聚丙烯酸酯系共聚物乳液的合成，以及聚丙烯酸系水性木器涂料的制备两项工业化生产技术。该产品可以取代油性涂料，广泛应用于木器家具的涂装和家庭、宾馆的装修。水分散环境友好型纳米结构漆适用于建筑、汽车、铁路、化工等工业领域。

Interdecadal Variability of Spring Precipitation over South China and Its Associated Atmospheric Water Vapor Transport

The characteristics of spring precipitation and water vapor transport in South China were analyzed by using observational data and the National Centers for Environmental Prediction (NCEP) reanalysis data. The results show that, during the spring, each component of the water cycle (precipitation, wind field, specific humidity, water vapor transport, etc.) in South China exhibits a notable interdecadal variability. An abrupt increase in spring precipitation occurred in the early 1970s. During the dry period from 1958 to 1971, a water vapor flux divergence (positive divQ) existed in South China, which may have led to the deficiency in rainfall. However, during the wet period from 1973 to 1989, there was a remarkable water vapor flux convergence (negative divQ) in South China, which may have resulted in the higher rainfall. The interdecadal variability of water vapor transport is closely related to the interdecadal variability of wind fields, although the interdecadal variability of specific humidity also plays a role to some extent, and the interdecadal variability of the zonal water vapor transport contributes much more to the interdecadal variability of spring precipitation than the meridional water vapor transport.

Processing Seismic Ambient Noise Data to Obtain Reliable Surface Wave Dispersion Measurements

Ambient noise tomography is a rapidly emerging field of seismological research. This paper presents the current status of ambient noise data processing and its development history over the past several years, with the intention to explain and justify this development through salient examples. The ambient noise data processing procedure can be divided into four principal phases： ① single station data preparation; ② cross- correlation and temporal stacking; ③ measurements of dispersion curves （ performed with frequency-time analysis for both group and phase speeds） ; ④ quality control, including SNR analysis and selection of the acceptable measurements. In addition, we provide a specific solution for a better use of the seismic station data to ambient noise study.

Individual variation in ballooning dispersal by black widow spiderlings： The effects of family and social rearing

Individual behavioral variation is ubiquitous across taxa and important to understand if we wish to fully use beha- vioral data to understand the ecology and evolution of organisms. Only recently have studies of individual variation in dispersal behavior become a focus of research. A better understanding of individual variation in dispersal behavior is likely to improve our understanding of population dynamics. In particular, the dynamics of critically small populations （endangered species） and large populations （pest species） may be driven by unique dispersal variants. Here we documented individual variation in the ballooning dispersal behavior of Western black widow spiderlings Latrodectus hesperus, an urban pest species found in superabundant in- festations throughout cities of the desert Southwest USA. We found a great deal of family-level variation in ballooning dispersal, and this variation was highly consistent （repeatable） across time. Maternal egg investment was a poor predictor of this ballooning dispersal. Instead, we show that spiderlings reared in isolation are significantly slower to disperse than spiderlings raised in a more natural setting surrounded by full siblings. Thus, our study examines a widespread but poorly understood dispersal behavior （ballooning）, and suggests urban pest population dynamics are likely driven by the interaction of variation in individuals, families and social environments

Preparation of pH-and reductive-responsive prodrug nanoparticles via polymerization-induced self-assembly

pH-and reductive-responsive prodrug nanoparticles are constructed via a highly efficient strategy, polymerization-induced selfassembly(PISA). First, reversible addition-fragmentation chain transfer(RAFT) polymerization of 2-(diisopropylamino) ethyl methacrylate(DIPEMA) and camptothecin prodrug monomer(CPTM) using biocompatible poly(N-(2-hydroxypropyl) methacrylamide)(PHPMA-CPDB) as the macro RAFT agent is carried out, forming prodrug diblock copolymer PHPMA-P(DIPEMA-co-CPTM). Then, simultaneous fulfillment of polymerization, self-assembly, and drug encapsulation are achieved via RAFT dispersion polymerization of benzyl methacrylate(Bz MA) using the PHPMA-P(DIPEMA-co-CPTM) as the macro RAFT agent. The prodrug nanoparticles have three layers, the biocompatible shell(PHPMA), the drug-conjugated middle layer(P(DIPEMA-co-CPTM)) and the PBz MA core, and relatively high concentration(250 mg/g). The prodrug nanoparticles can respond to two stimuli(reductive and acidic conditions). Due to reductive microenvironment of cytosol, the cleavage of the conjugated camptothecin(CPT) within the prodrug nanoparticles could be effectively triggered. p H-Induced hydrophobic/hydrophilic transition of the PDIPEMA chains results in faster diffusion of GSH into the CPTM units, thus accelerated release of CPT is observed in mild acidic and reductive conditions. Cell viability assays show that the prodrug nanoparticles exhibit well performance of intracellular drug delivery and good anticancer activity.

Natal dispersal in a social landscape： Considering individual behavioral phenotypes and social environment in dispersal ecology

Natal dispersal, the movement of an organism from its birthplace to the site of first reproduction, is fundamental to many ecological and evolutionary processes. Mechanistically, individual dispersal decisions can depend on both individual phe- notype and environmental cues. In particular, many established evolutionary theories of dispersal highlight the importance of the social environment. More recent research in behavioral ecology has focused on the importance of individual behavioral pheno- types. We reviewed the literature on individual behavioral phenotypes and dispersal and suggest that how individual behavioral phenotypes interact with the immediate social environment experienced by individuals in influencing dispersal is still poorly un- derstood, despite growing interest. We found that very few studies had examined the interaction of individual behavioral pheno- types and social factors, and behavioral phenotypes related to social tendencies were less commonly measured than were beha- vioral phenotypes related to exploration or response to risk. Further, and unsurprisingly, studies on social behavioral phenotypes and dispersal behaviors during the transience stage of dispersal were underrepresented compared to the departure or settlement stages. Future studies in this area should aim to＂ a） make explicit links between behavioral traits and their proposed effects on dispersal decisions throughout multiple stages of dispersal, b） integrate more continuous dispersal variables, and c） consider the effects of the spatial distribution and phenotypes of conspecifics （i.e., the social landscape） encountered by individual dispersers