3G各制式手机谁更“绿”色

关于手机辐射到底对人体是否有害,多年来专家们对此一直争论不休。但是越来越多的研究成果表明,手机辐射能够破坏人体细胞和带有人类遗传信息的DNA,超过一定的辐射量是对人体构成危害的。3G移动通信系统WCDMA、cdma2000、TD-SCDMA由于采用的不同技术,其各系统中的手机在使用过程中对人体的辐射量也会有比较大的区别,下文中通过链路预算,比较了3种制式手机在实际使用过程中谁更“绿”色。

对我国绿色GDP核算试点实践的思考

在调查我国绿色GDP核算试点情况、搜集相关资料的基础上,分析了我国绿色GDP核算试点工作中存在的主要问题。结果表明,我国绿色GDP核算内容不全面、方法不一致、公式不统一,以及政府官员对绿色GDP核算心存顾虑等问题,对我国推进绿色GDP核算造成了障碍。建议从开展绿色GDP核算理论研究、强化研究成果与核算实践的结合、建立完善的绿色GDP核算体系、加强公众参与等方面,加快推进我国绿色GDP核算的进程。

完善绿色GDP绩效考核的构想

随着空气污染、水污染等环境问题日趋严重,绿色GDP绩效考核作为一项新的管理工具正逐渐受到学者的关注和中央政府的重视,一些地方政府已开始采用绿色GDP对政绩进行考核。虽然这一考核在一定程度上能够起到推进我国行政体制改革、监督政府行为、维护政府信誉和形象、保护自然环境等重要作用,但我国政府绿色GDP绩效考核仍处于探索性阶段,还存在着政府绩效考核理论和实践研究不足、政府产出难以量化、政府绩效考核的规范化程度不高及政府绩效考核主体过于单一等众多问题。针对这些问题,提出从观念、制度和技术等几个方面来予以完善。

基于绿色增长核算方法的中国省际经济差距来源分析

通过构建绿色经济增长核算模型,测算中国省区经济增长的源泉,并利用虚拟增长分布法和状态空间模型分析要素投入和绿色全要素生产率及构成对中国省际经济差距的影响。研究认为:绿色技术效率对中国省际经济差距影响最大,其次为资本深化和绿色技术进步的作用,而人力资本对中国省际经济差距的影响最小;围绕加快绿色技术进步和提升绿色技术效率,提出改善绿色全要素生产率以缩小中国省际经济差距的对策建议。

绿色人才培养中存在的问题及解决对策

随着可持续观念的发展,环境教育已成为提高我国全民族思想道德素质和文化素质的基本手段之一,绿色人才应运而生。本文概括了绿色人才的含义,在分析绿色人才培养中存在问题的基础上,提出了建立专业化绿色学校、培养知识型绿色人才、争取政府的引导与支持、重视网络信息的传播作用等解决对策。

Evolutionary analysis of green credit and automobile enterprises under the mechanism of dynamic reward and punishment based on government regulation

To explore the green development of automobile enterprises and promote the achievement of the“dual carbon”target,based on the bounded rationality assumptions,this study constructed a tripartite evolutionary game model of gov-ernment,commercial banks,and automobile enterprises;introduced a dynamic reward and punishment mechanism;and analyzed the development process of the three parties’strategic behavior under the static and dynamic reward and punish-ment mechanism.Vensim PLE was used for numerical simulation analysis.Our results indicate that the system could not reach a stable state under the static reward and punishment mechanism.A dynamic reward and punishment mechanism can effectively improve the system stability and better fit real situations.Under the dynamic reward and punishment mechan-ism,an increase in the initial probabilities of the three parties can promote the system stability,and the government can im-plement effective supervision by adjusting the upper limit of the reward and punishment intensity.Finally,the implementa-tion of green credit by commercial banks plays a significant role in promoting the green development of automobile enter-prises.

Controlling Reactivity of Palladium Amides for Selective Carbonylation towards Urea and Oxamide Derivatives

Carbonylation reactions,crucial for carbonyl group incorporation,struggle with the inherent complexity of achieving selective mono-or double-carbonylation on single substrates,often due to competing reaction pathways.Herein,our study introduces a strategy employing palladium amides,harnessing their unique reactivity control,to direct the selective carbonylation of amines for the targeted synthesis of urea and oxamide derivatives.The palladium amide structure was elucidated using single-crystal X-ray diffraction.Controlled experiments and cyclic voltammetry studies further elucidate that the oxidation of palladium amide or its insertion into a carbonyl group diverges into distinct pathways.By employing sodium percarbonate as an eco-friendly oxidant and base,we have successfully constructed a switchable carbonylation system co-catalyzed by palladium and iodide under room temperature.The utilizing strategy in this study not only facilitates effective control over reaction selectivity but also mitigates the risk of explosions,a critical safety concern in traditional carbonylation methods.

制造企业节电增效的技术与管理协同推进机制

电力等能源消耗是制造企业的主要成本构成因素之一,节电降耗对于企业的利润改善和社会效益提升有重要作用。文献分析发现,制造企业的节电降耗主要分成技术创新和管理改善两个方面,相关的研究与实践也集中于这两条路径,但对于如何发挥这两条路径的协同作用及建立综合推进机制却未见有充分的研究。通过分析节能降耗的机会和所需的支持资源,总结出技术性和管理性节电增效推进力量的共性部分,并归纳出制造企业节电增效的技术与管理协同推进机制模型,然后依据该模型对4家案例企业的节电管理工作进行了实证分析并找出问题。该模型对于制造企业的节能降耗具有较好的指导意义。

Plasma methods for preparing green catalysts: Current status and perspective

Most current catalyst preparation methods cause pollution to air, water and land with the use of hazardous chemicals, lengthy operation time, high energy input and excessive water usage. The development of green catalyst preparation is necessary to prevent and eliminate waste from each step of the catalyst preparation. We summarize recent progress in the application of cold plasmas for green catalyst preparation. Cold plasma preparation can reduce the catalyst size, improve the dispersion and enhance catalyst-support interaction with the use of less or no hazardous chemicals. These improvements also lead to the enhancement of catalyst activity and stability. An alternative room temperature electron reduction with a non-hydrogen plasma as an electron source was developed for the reduction of noble metal ions in which no hazardous chemical reducing agent or hydrogen was needed. This creates many opportunities for the development of supported catalysts with heat sensitive substrates, including metal organic frameworks （MOFs）, covalent organic framework（COFs）, high surface area carbon, peptide, DNA, proteins and others. A novel floating metal catalyst on a water（or solution） surface has been established. Template removal using low temperature cold plasmas also leads to the formation of high surface area porous materials with characteristics that are normally only obtainable with high temperature calcination, but sintering can be avoided. Micro combustion has been developed for the removal of carbon template using cold plasma. This is promising for preparing many structured oxides in a simple way with no use of auxiliary chemicals. Many opportunities exist for the use of cold plasmas to make multi-metallic oxides. Some future development ideas are addressed.

Key Techniques of an Ecological Pattern“Planting Rice in One Season and Breeding Red Swamp Crawfish in Three Seasons” for Green Production in Lixiahe Region of Jiangsu Province

Three big field projects, independent irrigation and drainage facilities, and a blocking net, which are auxiliary projects of a green planting and breeding pattern composed of rice and red swamp crawfish （Procambarus clarkii）, spatial and temporal coupling technology of ＂planting rice in one season and breeding red swamp crawfish in three seasons＂, green fertilization technology, green prevention and control technology, control technology of water level, and throwing technology of bait in Lixiahe region of Jiangsu Province were introduced successively, which can provide technical support for the development of ecological planting and breeding patterns and realization of green production in paddy fields.

Stormwater management of urban greenway in China

In order to improve the stormwater regulation functions of urban greenways on the basis of literature research and case study the relationships between urban greenway and low impact development LID and green stormwater infrastructure GSI are analyzed. Then the classification system of urban greenways is proposed based on their stormwater regulation function and the suitable technical measures for stormwater management which can be used in different kinds of greenways are selected. According to China’s urban planning system the greenway planning method combined with the urban drainage system is developed and the design methods of the greenway stormwater system and individual stormwater facilities are put forward. The relationships between the greenway stormwater system and other systems are also analyzed in terms of stormwater inlet vertical design and overflow.Finally the waterfront greenway and street greenway demonstration projects in Jiaxing City which adopts the above concept and method are introduced. The results show that the reduction rates of annual total stormwater runoff and average total runoff contaminants TSS of the stormwater system are not less than 30% and 40% respectively.

Human Pro-insulin Transgenic Calf Derived from Somatic Cell Nuclear Transfer

The current study was undertaken to evaluate the possibility of producing a human pro-insulin transgenic cow by means of somatic cell nuclear transfer （SCNT）. A double selection system, Neomycin resistance （Neo^r） gene and enhanced green fluorescent protein （EGFP） gene linked through an inner ribosomal entry site （IRES） sequence directed by a Cytomegalovirus （CMV） promoter, was used for enrichment and selection of the transgenic cells and preimplantation embryos. Transgenes were introduced into bovine fetal fibroblast cells （BFF） cultured in vitro through electroporation （900 V/cm, 5 ms）. Transgenic bovine fibroblast cells （TBF） were enriched through addition of G418 in culture medium （800 μg/mL）. Before being used as a nuclear donor, the TBF cells were either cultured in normal conditions （10% FBS） or treated with serum starvation （0.5% FBS for 2-4 days） followed by 10 hours recovery for G1 phase synchronization. Transgenic cloned embryos were produced through GFP-expressing cell selection and SCNT. The results were the percentage of blastocyst development following SCNT was lower using TBF than BFF cells （23.2% VS 35.2%, P 〈 0.05）. No difference in the percentage of cloned blastocysts between the two groups of transgenic nuclear donor of normal and starvation cultures were observed （23.2% VS 18.9%, P 〉 0.05）. Two to four GFP-expressing blastocysts were transferred into the uterus of each synchronised recipient. One pregnancy from of seven recipients （21 embryos） was confirmed by rectum palpation 60 days after embryo transfer and one recipient has given birth to a calf at term. PCR and DNA sequencing analysis confirmed that the calf was produced using human proinsulin transgenic animal.

Screening for a Novel Trichoderma vride Strain Highly Producing Cellulase via Ultraviolet Mutagenesis

[Objective] The aim of this study was to find out a new Trichoderma vride K strain highly producing cellulase.[Method] Ultraviolet（UV） was used to induce mutagenesis on T.vride K and to select out a new Trichoderma vride strain highly producing cellulase from the first round and further selection.[Result] A new T.vride strain K6 with high yield of cellulase was obtained with the enzyme production amount of 1.39 times over that of starting strain K.This strain showed highest cellulase yield under the culture condition of 28 ℃ for 96 h.[Conclusion] The strain K6 selected out from induced mutation is endowed with better capacity of producing cellulase,which provides a new method for the utilization of straw.

Iron(Ⅲ) phthalocyanine chloride-catalyzed oxidation–aromatization of α,β-unsaturated ketones with hydrazine hydrate: Synthesis of 3,5-disubstituted 1H-pyrazoles

We have developed an iron（III） phthalocyanine chloride‐catalyzed oxidation–aromatization ofα,β‐unsaturated ketones with hydrazine hydrate. Various 3,5‐disubstituted 1H‐pyrazoles were obtained in good to excellent yields. This method offers several advantages, including room‐tem‐perature conditions, short reaction time, high yields, simple work‐up procedure, and use of air as an oxidant. The catalyst can be recovered and reused five times without loss of activity.

Hydrothermal synthesis of silver nanoparticles in Arabic gum aqueous solutions

Finely divided silver nanoparticles were synthesized via the hydrothermal method. Arabic gum （AG） was used as both the reductant and steric stabilizer without any other surfactant. By adjusting the reaction temperature, mass ratio of AG to AgNO3, and reaction time, silver nanoparticles with different morphological characteristics could be obtained. The products were characterized by UV-Vis, FTIR, TEM, SEM, and XRD measurements. It was found that temperature and AG played an important role in the synthesis of mono-disperse silver nanoparticles. Well dispersed and quasispherical silver nanoparticles were obtained under the optimal synthesis conditions of 10 mmol/L AgNO3, m（AG）/m（AgN03）= l：1, 160 ℃ and 3 h.

Evaluation of the Adaptability of 28 Green Asparagus Cultivars

[Objective] This study aimed to evaluate the adaptability of 28 green asparagus cultivars under the climatic conditions in Poland and to select cultivars most suitable for growing in Poland. [Method] Based on an overview of asparagus, spears of 28 cultivars from the six year’s harvest in 2008 were evaluated at the Marcelin Experimental Station. During the harvest period, spears were cut daily and trimmed to 22 cm, followed by grading and weigh. In addition, general appearance, anthocyan discolouration, head tightness, colour and smoothness of the spears were also evaluated. [Result] In terms of total yield, ‘Gynlim’ was the best cultivar, followed by ‘Hannibal’, ‘Ravel’, ‘Grolim’ and ‘Ramada’; ‘Gloria’ was the worst cultivar, followed by ‘Tsuki-kho 3’, ‘Purple Passion’, ‘Jacq. Ma 2014’, ‘Sartaguda’, and ‘Jacq. Ma 2004’. ‘Gynlim’, ‘Hannibal’, ‘Ravel’, ‘Ramada’ and ‘Ariane’ were the top five cultivars in early yield, and the worst cultivar concerning early yield was ‘PLA-2132’, followed by ‘Ramos’, ‘Tsuki-kho 3’ and ‘Purple Passion’. ‘Ariane’, ‘Cipress’, ‘Grolim’, ‘Gynlim’ and ‘Hannibal’ were five best culivars considering spear quality, and the four worst cultivars were ‘Jacq. Ma 2004’, ‘Gloria’, ‘Jacq. Ma 2014’ and ‘Tsuki-kho 3’. [Conclusion] Taken both the yield and quality of spears into consideration, the most suitable cultivars of green spears for growing under the climatic conditions in Poland should be ‘Gynlim’, ‘Hannibal’, ‘Ravel’ and ‘Grolim’, while ‘Gloria’, ‘Tsuki-kho 3’, ‘Purple Passion’, ‘Jacq. Ma 2014’ and ‘Sartaguda’ were not suitable for growing in Poland.

Effect of Heat Stress on Photosynthetic Characteristics of Different Green Organs of Winter Wheat During Grain-filling Stage

Four winter wheat (Triticum aestivum L.) varieties ('JD 8', 'Jing 411','Centurk' and 'Tam 202') were used to study the effect of heat stress on photosynthetic characteristics of flag leaf blade, nag leaf sheath, peduncle, glume, lemma and awn during grain-filling stage. The results showed that heat acclimation during grain-filling stage increased thermotolerance of wheat with significant differences among different green organs. During heat stress, the decreases of the efficiency of primary light energy conversion (F-v/F-m) of PS II and pigment (chlorophyll and carotenoid) content were much slower in peduncle, flag leaf sheath and glume than in nag leaf blade, lemma and ann; and the percentage of decrease in net photosynthetic rate (P-n) of ear was lower than that of the nag leaf blade. The measured photosynthetic parameters (F-v/F-m, P-n and pigment content) of 'JD 8', a relatively heat tolerant variety, declined more slowly than those of the other three varieties during the whole heat stress period.

Construction of Fusion Expression Vector of α-galactosidase-EGFP in Cucumber

[Objective] The research aimed to construct the fusion protein expression vector of α-galactosidase-EGFP （enhanced green fluorescent protein） in cucumber controlled by CaMV35S promoter.[Method] CaMV35S promoter sequence and the coding region of EGFP were amplified by polymerase chain reactions （PCR） with vector pCambia 1303 as the template.Using reverse transcript PCR technology,with total RNAs of cucumber as template,the coding region of acid α-galactosidase Ⅰ in cucumber was amplified.The above three fragments were inserted into the multiple cloning sites of expression vector pCambia 1381c.The fusion expression vector of α-galactosidase-EGFP located at the C-terminal of the target genes was constructed.[Result] After enzyme digestion and sequencing,the fusion expression of α-galactosidase-EGFP in cucumber was constructed successfully.[Conclusion] The research laid the experimental basis for further study on the subcellular localization of α-galactosidase in cucumber.

New LCA Approach with Fuzzy Evaluation

A quantitative and comprehensive method of product life cycle assessment(LCA) with fuzzy theory is developed, which will help designers to select the optimum design scheme for product life cycle design(LCD). Based on the theory of multiple attribute decision making, an algorithm of comprehensive and comparative evaluation for product environmental adaptability is presented. A program is built and used in an example of design improvement. The result shows that the proposed method and algorithm are practical and effective to the development of green products.

加入质量考量的相对资源承载力研究——以广东珠三角为例

以黄宁生等提出的相对资源承载力概念模型为基础,通过改变经济资源指标即引入"绿色GDP"替代"传统GDP",提出了考量资源与环境质量的新模型。选取广东省珠江三角洲经济区为研究对象,应用该模型对该地区的相对资源承载力情况进行了实证分析,对新方法计算出的结果与传统方法进行了对比,得出珠三角经济区的江门、肇庆、惠州3市的传统综合承载力和绿色综合承载力排名除2005年外均为前三位等结论;然后对上述排名的主要原因进行了分析,并针对性地提出了相关建议。