大亚湾海域沉积物中放射性γ谱分析测定

本文报导了γ能谱相对比较法测量海洋沉积物中放射性核素238U、226Ra、232Th、40K和137Cs等方法,并进行了2005年和2006年夏季大亚湾海域三个站位沉积物γ谱测定,对结果进行分析,为今后大亚湾海域辐射环境监测提供基础。     

海洋沉积物DNA提取前的简易脱腐方法研究

针对海洋沉积环境样品DNA提取中的腐殖酸去除难题,采取先脱除腐殖酸再提取DNA的策略,进行了海洋沉积物DNA提取前的简易脱腐方法研究.依据腐殖酸的理化性质, 遴选出由Tris-HCl、EDTA、Na4P2O7、NaCl、PVP、Triton X-100及脱脂奶粉组成脱腐缓冲液,有效地脱除了腐殖酸.之后采用温和的溶菌酶-蛋白酶K-SDS直接裂解法,获取了大片段(分子量21kb以上)可进行rpoB 基因PCR扩增的海洋沉积物DNA,为海洋沉积环境分子生态学研究与海洋生物活性物质开发奠定了基础.     

等离子体在陶瓷材料生产加工中的应用

本文就热等离子体涂覆、低温等离子体表面改性、等离子体用于超细粉的合成、等离子体烧结陶瓷材料及ICP MS分析陶瓷组成等五个方面详细介绍了等离子体在陶瓷材料发展中的应用背景、技术条件及发展方向。     

等离子体在陶瓷材料生产加工中的应用

本文就热等离子体涂覆、代温等离子体表面改性，等离子体用于超细粉的合成，等离子体烧结陶瓷材料及ICP－MS分析陶瓷组成等五个方面详细介绍了等离子体在陶瓷材料发展中的应用背景，技术条件及发展方向。     

用ICP—MS法测定四个不同地区泽泻中微量元素的含量

本文采用电热板—HNO_3—H_2O_2消解体系,电感耦合等离子体质谱(ICP—MS)法对分别产于福建建瓯、福建龙海、江西彭山、四川罐县等四个不同地区的泽泻进行微量元素的定量分析,通过数据处理统计,对泽泻中微量元素含量测定的结果、方法的准确性及其应用进行初步探讨。     

阳极溶出伏安法测定海洋沉积物中的铅和镉

海洋沉积物经硝酸-高氯酸-硝酸消解后,以高氯酸做支持电解质,采用阳极溶出伏安法的标准加入法,连续测定海洋沉积物中的铅和镉时,铅和镉的半波电位稳定,峰形对称。方法的重复性好、准确度高,可以作为一种测定海洋沉积物中铅和镉含量的使用方法。     

厦门港和筼筜湖沉积物中多溴联苯醚类防火剂(PBDEs)的色谱一质谱联机同位素稀释法测定

利用13C标记的多溴联苯醚标准作内标对厦门沿岸海域和筼筜湖沉积物进行色谱—质谱联机测定并采用同位素稀释法进行数据收集和计算,分别测定PBDE3、15、28、47、60、85、99、100、138、153、154和183共12个同类化合物,其回收率范围为75.8-100.5%,最低检测限0.02ng/g(d),沉积物中总PBDE最高值为厦门第一码头2.06ng/g(d),最低是厦门大学海水浴场为0.10ng/g(d)。     

等离子体发射光谱法测定地质样品中的钒钛

本文采用等离子体发射光谱法（ICP—OES）对地质样品（岩石、水系沉积物、土壤等）中的钒钛进行了测定,通过优化实验条件确定了最佳分析波长,本方法检出限低、快速简单,经国家一级标准物质分析验证方法可行,实际样品的分析结果与其他分析方法吻合。     

厦门港和筼筜湖沉积物中多溴联苯醚类防火剂(PBDEs)的色谱-质谱联机同位素稀释法测定

利用^13C标记的多溴联苯醚标准作内标对厦门沿岸海域和筼筜湖沉积物进行色谱-质谱联机测定并采用同位索稀释法进行数据收集和计算，分别测定PBDE3、15、28、47、60、85、99、100、138、153、154和183共12个同类化合物，其回收率范围为75．8—100．5％，最低检测限0．02ng／g（d），沉积物中总PBDE最高值为厦门第一码头2．06ng／g（d），最低是厦门大学海水浴场为0．10ng／g（d）。     

ICP—MS分析中药微量元素的方法探讨

本文研究了中药材和中成药的样品处理,ICP—MS的仪器工作条件,探讨和建立了中药微量元素分析的方法。     

Modelling the 137Cs ingestion dose from consumption of marine fish in Hong Kong

This paper presents a compartmental model for estimating the ingestion dose, due to 137Cs, arising from the consumption of marine fish in Hong Kong. 137Cs is one of the more important radionuclides released in routine liquid effluents discharged from the Guangdong Nuclear Power Station at Daya Bay, which began commercial operation in 1994. In the model, three sea/ocean compartments are considered. Assuming the discharge of this radionuclide is maintained at a constant rate, the model shows that the concentration of 137Cs in the water and in the marine fish in the three sea compartments would become steady after 5 years. The predicted annual dose to an average local individual in Hong Kong, for a release rate of 10 GBq.y(-1), is 3.2 x 10(-5) microSv, which is dominated by the contribution from fish cultured in Hong Kong waters. The cumulative collective dose to the local population of 6 million, at 50 years of discharge, amounts to 9.0 x 10(-3) man.Sv. The annual dose to members of the critical group of local fish farmers does not exceed 3.0 x 10(-3) microSv. All these doses are small compared to the dose of around 1.2 microSv.y(-1) arising from ingestion of naturally occurring radionuclides found in marine fish. Sensitivity of model parameters and uncertainties of prediction are also studied. Difficulties encountered in model validation are discussed. Despite such difficulties. limited field data that are available show that the predicted results are generally within one order of magnitude with measurements.     

Growing scientific collaboration between Hong Kong and Mainland China since the handover: a 20-year bibliometric analysis

The handover of Hong Kong launched a new era for Hong Kong and Mainland China, featuring an increasingly closer relationship. The purpose of this study was to investigate the performance and dynamics of scientific collaboration between Hong Kong and Mainland China over the past 20 years since the handover. Bibliometric analysis of scientific output, research area distribution, document type and collaborative mainland province were conducted based on publication data from the science citation index expanded database. The results showed that the number of HK-Mainland collaborative publications grew rapidly, contributing to the scientific output of Hong Kong, with the percentage share increasing to more than half in 2016. Research area analysis suggested the occurrence of gradually deepening and widespread communication between Hong Kong and Mainland China. Of fifty research areas in Hong Kong, more than half of scientific publications were completed via collaboration with the mainland in 2017. The mainland provinces that collaborated with Hong Kong showed a widening geographic scope and a simultaneous increase in collaborative activity. A distribution of Guangdong Province and Beijing as the two most active hotspots with a dozen active spots across the mainland was gradually formed. The collaborative activity of Guangdong Province has exceeded that of Beijing since 2011, while that of Guangzhou and Shenzhen increased linearly and exponentially respectively, and contributed at least 70% to Guangdong Province every year. The relationship between Hong Kong and Mainland China in science and technology has become closer than ever before.     

海底沉积物声学性质测量技术评述

由于资源勘探、军事应用、岩土特性声学调查和声波传播理论研究等的需要,多年来人们一直在进行海底沉积物声学性质的测量。对海底沉积物声学性质的取样测量技术和原位测量技术进行了叙述,分别总结了两种测量技术存在的问题,认为下一步有必要发展海底沉积物低频声学性质的直接测量技术,建议在原位测量海底沉积物声学性质参数的同时测量其他性质参数以便于对比研究,并设法提高原位测量的工作效率。     

中国版权局与香港海关携手打击盗版光盘

近年来，中国国家版权局与香港海关携手，共同打击盗版光盘，不仅有效规范了香港光盘生产加工秩序．而且对于净化内地与香港的著作权保护环境、防范不法分子通过香港加工盗版音像制品走私进入内地市场、有效保护著作权人合法权益等方面也发挥了积极作用。     

Environmental impact assessment in Hong Kong: a comparison study and lessons learnt

Abstract

Although many studies in developed countries on the practice of EIA have been conducted, there is a lack of similar attention in Hong Kong. This gap in knowledge is addressed in this study which summarises and records the current practice and lessons learned from priority projects. In the case of Hong Kong, this lack of understanding is important, since a significant number of infrastructure projects with applications pending for environmental approvals were delayed, awaiting the court ruling of the judicial review. In this research, the EIA system and practices in Hong Kong were comprehensively reviewed by a comparison study between Hong Kong, Mainland China, Taiwan and Singapore. Then field work of interviews with professionals and focus group meetings with Green Groups were conducted to seek opinions of interviewees and members about the mechanism of EIA. Recommendations on aspects of EIA systems are provided at the end of the paper.     

Hydration of lime—marine sediment blends: Influence of mineralogical composition and lime content

There is a need to find alternatives to the extraction of non-renewable mineral resources for the production of new binders. Some specific building materials such as plant-aggregate-based concretes do not require high-strength binders. In this context, the lime-pozzolan technology, inherited from Roman times, can help reduce the carbon footprint of finished materials by the use of low amounts of lime. In this paper, three different marine dredged sediments were used as natural alumino-silicate resources and blended with hydrated lime. Based on previous literature dealing with the pozzolanic activity of cristallized minerals, the sediments were reduced to micronized powders. The hydration of these systems was investigated through hardening and reaction kinetics up to 365 days at 20 °C and 50 °C. The sediments used revealed two kinds of mineral assemblages and the best pozzolanic reactivity was found with quartz-rich sediments. In addition, the optimum lime content was found to be 20 wt% until 180 days.     

香港交通噪声问题及其控制政策综述

不同于世界其他大城市,香港因其特有的噪声问题,有时会被冠以世界最嘈杂的城市的称号。对此,香港政府为改善噪声环境付出了极大的努力,并且取得了一定的成效。然而,主要的噪声问题仍然存在,部分缘于其拥挤的城市结构以及八十年代之前城市规划时对噪声污染问题的忽视,这些都不是一朝一夕之间能解决的问题。香港的噪声问题中,又以交通噪声最为严重,80%的香港人在不同程度上受到道路交通噪声的影响。该文介绍了香港交通噪声问题及其现行的交通噪声政策,并讨论了现行政策所遇到的问题,最后介绍了由香港声学学会提议的进一步的交通噪声控制策略。