Results 61 to 70 of about 1,050,276 (157)

一硝基甲苯生产废水处理研究进展

open access: yesGongye shui chuli, 2004
一硝基甲苯是生产多种精细化工产品生产的中间体,工业用途广泛。其生产过程中产生大量酚类副产物,毒性大,难治理。文中综述了处理硝基酚类、硝基甲苯类物质的主要方法,包括吸附、萃取、化学氧化、化学还原和生物化学法等,并展望了甲苯硝化废水处理工业化应用的研究方向。
许雪记, 韩永忠
doaj   +2 more sources

Centering geospatial data uncertainty and the potential for injustice in pastoralist rangeland conservation prioritization

open access: yesConservation Biology, Volume 40, Issue 4, August 2026.
Abstract Procedural, distributional, recognitional, and epistemic justice aspects of conservation interventions are well documented in contexts where pastoralism is a key livelihood and way of life. Geospatial analyses and representations of wildlife conservation and restoration that are increasingly applied in pastoralist rangeland socioecological ...
Ryan R. Unks
wiley   +1 more source

北部湾经济区高尔夫产业化发展对策研究 [PDF]

open access: yes, 2009
1高尔夫产业化的概念高尔夫产业化是通过对高尔夫自身规模组织的改造,实现向产业部门的转化,从而成为国民经济的一个部门或有机组成部分的过程。2北部湾经济区高尔夫发展的SWOT分析优势:北部湾经济区气候条件十分利于高尔夫运动的开展,高尔夫球场的地形也具多样性、风格独特,而且休闲旅游配套完善。劣势:高尔夫经营种类单一,高尔夫球具服装的制造以及高尔夫经纪业都未得到应有的发展,举办高尔夫职业赛事 ...
吴铁勇   +3 more
core  

Analysis of demonstration comparison of tertiary industry structure beneficial result in four province areas of South China(华南四省区第三产业结构效益的实证比较分析)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2008
偏离-份额分析法是考察区域经济结构极其重要的一种方法,第三产业结构变化是三次产业总体结构优化调整的主要影响因素之一.运用偏离-份额分析方法对华南四省区第三产业结构效益进行实证比较分析,在对华南四省区第三产业结构效益的特点比较评价的基础上,提出华南四省区第三产业发展中存在的主要问题及其发展对策.
LIXing-qiang(黎兴强)
doaj   +1 more source

Learner‐Focused Strategy Instruction From the Teachers’ and the Learners’ Perspective

open access: yesInternational Journal of Applied Linguistics, Volume 36, Issue 3, Page 2358-2375, August 2026.
ABSTRACT Numerous large‐scale quantitative studies have been conducted to yield a macro‐level picture of the effectiveness of strategy instruction. However, little is understood about learners' actual processing of strategy instruction and interaction with the teachers delivering it.
Isobel Kai‐Hui Wang, Andrew D. Cohen
wiley   +1 more source

钢结构建筑产业化政策分析与推进机制研究

open access: yesJianzhu Gangjiegou Jinzhan, 2018
装配式钢结构建筑是建造方式的一种改革,更是建筑业落实党中央、国务院提出的推动供给侧结构性改革和绿色低碳可持续发展战略的一个重要举措。但是目前钢结构建筑产业化在工程应用及市场推广上仍面临多方面的困难,国内仅7个地区出台相关政策指导意见,学术研究大都集中在钢结构建筑产业化的发展阻力上,在关键技术、经济成本、产业链等方面还需继续深入研究。对钢结构建筑产业化发展的研究情况进行综述,分析了当前研究现状和不足,归纳了影响钢结构建筑产业化发展的宏观环境、政策体系、技术体系、产业组织4类关键因素。同时 ...
于竞宇   +4 more
doaj  

Polyphenol oxidase depletion in Nicotiana benthamiana enhances recombinant protein purification and preserves native protein integrity

open access: yesNew Phytologist, Volume 251, Issue 3, Page 1283-1293, August 2026.
Polyphenol oxidases (PPOs) depletion preserves endogenous proteins at their predicted molecular weights and enhances detectable enzymatic activities. (a) Less RbcL crosslinking in ppo mutant of Nicotiana benthamiana. Leaf extracts were incubated for 1 h, separated on protein gels, stained with Coomassie or analyzed by Western blot with the anti‐RbcL ...
Kaijie Zheng   +4 more
wiley   +1 more source

基于“一站式体验”的文化旅游创意产业园区研究 [PDF]

open access: yes, 2008
在旅游产业集群化发展趋势以及旅游产品越来越呈现出文化创意产业特点的背景下,文化创意产业与旅游业的融合产生了文化旅游创意产业;而文化旅游创意产业在特定空间的集聚构成文化旅游创意产业园区。本文尝试性地对"文化旅游创意产业园区"这一实践早于理论的新兴旅游产品进行了定义;从"一站式体验"的角度出发,总结了文化旅游创意产业园区开发的主流模式;以建设旅游目的地为目标 ...
杨兆萍, 郑斌, 刘家明
core  

基于MQTT的工业物联网通信系统研究与实现

open access: yes智能科学与技术学报, 2019
工业物联网充分利用传感器、计算机网络、大数据处理等技术,解决由传统工业系统运行封闭造成的“信息孤岛”问题,使得系统之间可以快速、准确、可靠地进行数据交换。工业现场与云端如何建立高质量、低带宽需求的数据交换模式是实现智能制造的一大挑战。采用具有轻量级、配置灵活、应用广泛的消息队列遥测传输(MQTT)协议,搭建了基于MQTT的工业物联网通信系统,实现云端和工业现场的多源异构数据交换、设备状态的远程监测及用户服务订阅等功能,以此研究MQTT协议在工业物联网通信系统中的性能及相关应用。
贾凡   +5 more
doaj  

Root hair plasticity in cereals under abiotic stress

open access: yesNew Phytologist, Volume 251, Issue 4, Page 1684-1693, August 2026.
An integrative perspective on how to study the regulation of root hair plasticity to increase the resilience of cereals to abiotic stress. Summary Abiotic stress is a constant threat to crop growth and yield in the context of climate change. Root systems that can best adapt their architecture to environmental challenges contribute to enhanced ...
Yaping Zhou, Frank Hochholdinger
wiley   +1 more source

Home - About - Disclaimer - Privacy