英国Clo公司绝缘产品将涉足户外运动服饰领域

6月19日，生产高透气性服装保温材料的英国Clo保温材料公司宣布将涉足户外运动服饰领域。Clo公司是市场上最透气的绝缘产品Vivo的创造者，Vivo也受到了全球户外服装品牌的广泛欢迎。

Modern Corrosion Mapping of Storage Tank Bottoms--Notable Advancements in Critical Zone Coverage,Inspection Efficiency and Data Integrity

Every day,an NDT(Non-Destructive Testing)report will govern key decisions and inform inspection strategies that could affect the flow of millions of dollars which ultimately affects local environments and potential risk to life.There is a direct correlation between report quality and equipment capability.The more able the equipment is-in terms of efficient data gathering,signal to noise ratio,positioning,and coverage-the more actionable the report is.This results in optimal maintenance and repair strategies providing the report is clear and well presented.Furthermore,when considering tank floor storage inspection it is essential that asset owners have total confidence in inspection findings and the ensuing reports.Tank floor inspection equipment must not only be efficient and highly capable,but data sets should be traceable and integrity maintained throughout.Corrosion mapping of large surface areas such as storage tank bottoms is an inherently arduous and time-consuming process.MFL(magnetic flux leakage)based tank bottom scanners present a well-established and highly rated method for inspection.There are many benefits of using modern MFL technology to generate actionable reports.Chief among these includes efficiency of coverage while gaining valuable information regarding defect location,severity,surface origin and the extent of coverage.More recent advancements in modern MFL tank bottom scanners afford the ability to scan and record data sets at areas of the tank bottom which were previously classed as dead zones or areas not scanned due to physical restraints.An example of this includes scanning the CZ(critical zone)which is the area close to the annular to shell junction weld.Inclusion of these additional dead zones increases overall inspection coverage,quality and traceability.Inspection of the CZ areas allows engineers to quickly determine the integrity of arguably the most important area of the tank bottom.Herein we discuss notable developments in CZ coverage,inspection efficiency and data integrity that combines to deliver an actionable report.The asset owner can interrogate this report to develop pertinent and accurate maintenance and repair strategies.

Evolution of gully erosion and susceptibility factors in the urban watershed of the Kimemi(Butembo/DR Congo)

Gully erosion is one of the most intense landscape degradation mechanisms in areas with varying environmental characteristics.Both natural and anthropogenic factors affect the gullying process.Reliable documentation of these processes in tropical African cities is scarce.This study assessed the gully erosion dynamic and the sus-ceptibility factors in the urban watershed of Kimemi in eastern Democratic Republic of Congo(DRC).Data were obtained through a combination of fieldwork and digitization of very high spatial resolution images from Google Earth(from 2011 to 2021).The length,width,and area of large gullies(width≥5 m)were measured for each year of the study.A logistic regression model(LRM)was also used to investigate the influence of both physical and anthropogenic factors on gully susceptibility.The results revealed that the number of gullies has increased from 36 to 61 during the last decade.The gully mean length of 63.9±61.1 m,129.3±104.9 m,and 174.7±153.8 m were obtained for the years 2011,2015,and 2021 respectively.The average density of gully network for the study period was 0.12 km/km^(2),while the degraded land was -1.3 and -1.1 ha/year for 2011-2015 and 2015-2021 for the entire watershed.The significant changes in morphometric parameters(length,width,area)were found only in the bare land and building land uses.A strong and positive relationship between the length(m)and the area(ha)was found.Furthermore,the susceptibility of gullying was significantly influenced by the slope,stream power index(SPI),distance to roads and rivers,land use and land cover(LULC),and normalized difference vegetation index(NDVI).This means the areas located in the bare land and building or close to roads and/or streams are more likely to be gullied.The findings emphasize the impact of urbanization on gully erosion in the Kimemi watershed,highlighting the importance of informed land management decisions with a close attention to anthropogenic factors.

Simulation Modeling in Plant Breeding: Principles and Applications

Conventional plant breeding largely depends on phenotypic selection and breeder＇s experience, therefore the breeding efficiency is low and the predictions are inaccurate. Along with the fast development in molecular biology and biotechnology, a large amount of biological data is available for genetic studies of important breeding traits in plants, which in turn allows the conduction of genotypic selection in the breeding process. However, gene information has not been effectively used in crop improvement because of the lack of appropriate tools. The simulation approach can utilize the vast and diverse genetic information, predict the cross performance, and compare different selection methods. Thus, the best performing crosses and effective breeding strategies can be identified. QuLine is a computer tool capable of defining a range, from simple to complex genetic models, and simulating breeding processes for developing final advanced lines. On the basis of the results from simulation experiments, breeders can optimize their breeding methodology and greatly improve the breeding efficiency. In this article, the underlying principles of simulation modeling in crop enhancement is initially introduced, following which several applications of QuLine are summarized, by comparing the different selection strategies, the precision parental selection, using known gene information, and the design approach in breeding. Breeding simulation allows the definition of complicated genetic models consisting of multiple alleles, pleiotropy, epistasis, and genes, by environment interaction, and provides a useful tool for breeders, to efficiently use the wide spectrum of genetic data and information available.

浅谈爆破有害效应的控制技术

工程爆破过程中会产生爆破地震效应、爆破空气冲击波、爆破飞石等危害。分析了3种有害效应产生的原因及危害,提出采用控制爆破技术设计和采取针对性的预防措施来有效降低爆破有害效应的危害,为类似爆破项目提供借鉴。

注射肉毒杆菌毒素A(Botox~)除皱继发结节病样肉芽肿(法国)

Background. The introduction of foreign material into the skin can lead to sarcoidal reactions. Such a reaction is reported, consecutive to injections of botulic toxin A (Botox ). Case report. A 57-year-old woman, noticed the occurrence of frontal and glabellar nodules, 3 weeks after the injection of botulic toxin A (Botox ), for the correction of wrinkles. Histopathological examination revealed a sarcoidal granuloma. Clinical and biological investigations were negative, ruling out the hypothesis of systemic sarcoidosis. The lesion could be reproduced experimentally by an intradermal injection of botulic toxin A on the volar aspect of the forearm. Corticosteroids per os associated with intralesional injections of triamcinolone acetonide were followed by a complete regression of the nodules. Discussion. The occurrence of sarcoidal granulomas at the sites of injection of botulic toxin A (Botox ) has not been reported-so far in the literature. Systemic sarcoidosis has been ruled out. The sarcoidal reaction has been reproduced experimentally by the intradermal injection of botulic toxin A, but not by saline. This leads to think that the sarcoidal reaction was provoked by antigenic stimulation, comparable to the Kveim reaction, and did not correspond to “ scar sarcoidosis ” .

“What are you interested in?”—A survey on 601 nursing homes residents activities interests

Lack of engagement in activities is a common feature of nursing homes residents. As apathy is the most frequent behavioural disturbance, understanding residents’ interests is a milestone for tailored challenging interventions targeting engagement enhancement. Objective: To depict the activities interests of nursing homes residents. Method: An electronic version of the Test of Interest “TILT” which regroups 40 images of activities has been developed and adapted for the Ipad. Residents were asked to answer by yes or no to the question “are you interested by this activity”, for each activity found interesting, the patient had then to categorize it in either Work/ occupation-Personal-Leisure-Family. Population: A total of 601 residents from 19 nursing homes have completed the survey from March to May 2011. The surveyed nursing homes from the South East of France were comparable of nursing homes figures in France. Results: We interviewed 601 individuals (female, n = 484) aged 85.9 years, out of those, 56% had stayed more than one year in an institution. Nearly half of the population (45.3%) was from 80 - 89 year of age, followed by 36.1% from 90 - 99. The educational background was principally from primary school (36%) and high school (30.8%). Most of the residents were classified has having dementia (35.3%). From the 40 activities presented to each participant, “enjoying a good meal” has been found to be the most interesting activity by 83% of the population followed by “dressing up”, 75.9% and “watching TV”, 75.5%. Female participants reported more interest in place of worship, family pictures and being with grand children then males (p < 0.01). We found that the presence of “dementia” diagnosis” triggered the lack of interest compared to none demented or none cognitively impaired residents (p < 0.01). It was found that participants aged 55 - 69 were more the most interested to do video games (p < 0.05), though this may be interpreted as a positive step toward functional and cognitive rehabilitation program using virtual reality as a mean for intervention.

Service Parameter Exposure and Dynamic Service Negotiation in SDN Environments

Software-defined networking （SDN） is a generic term and one of the major interests of the telecoms industry （and beyond） over the past two years. However, defining SDN is a somewhat controversial exercise. The claimed flexibility, as well as other presumed assets of SDN, should be carefully investigated. In particular, the use of SDN to dynamically provision network services suggests the introduction of a certain level of automation in the overall network service delivery process, from service parameter negotiation to delivery and operation. This paper aims to clarify the SDN landscape and focuses on two main aspects of the SDN framework： net- work abstraction, and dynamic parameter exposure and negotiation.

Toxicity Study of Anti-HABs Agents on Penaeus chinensis

In order to study the effect of anti-HABs agents on Penaeus chinensis, the toxicity experiments on clay, Ca(ClO)2, FeCl3, and AlCl3 to Penaeus chinensis are carried out. The results show that: (1) the clay isn't toxic to Penaeus chinensis; (2) Ca(ClO)2 has no toxicity to Penaeus chinensis at low levels, but has acute and chronic toxicity at high levels; (3) Penaeus chinensis can accumulate Fe and Al. The toxic effect needs further study.

Methodologies for Assessing 3D QoE: Standards and Explorative Studies

Mastering quality of experience （QoE） is key to the widespread adoption of stereoscopic 3DTV （S-3DTV）. However, assessing QoE of S-3DTV is not straightforward. Methods for determining observer experience need to be clearly defined and sufficiently robust. In this paper, we present state-of-the-art subjective QoE assessment for S-3DTV. We present conventional stan- dardized ITU recommendations for evaluating picture quality and discuss new ITU activities in the area of S-3DTV assess- ment. We also present and discuss explorative studies from the literature. We then introduce ways of using conventional quality assessment for S-3DTV QoE assessment. In discussing our pro- posal, we mainly focus on QoE indicators and common features of subjective assessment. Multidimensional QoE indicators need to be used in S-3DTV to highlight advantages and reveal problems. In the second part of our proposal, we discuss the re- quirements for adapting ITU-R BT.500, a conventional subjec- tive QoE assessment method, ITU-R BT.500, for assessing QoE of S-3DTV are presented.

1欧元和2欧元硬币的高镍释放:有实际意义吗?

Purpose: To determine the release of nickel from 1-and 2-euro coins and the ability to produce allergic contact dermatitis from the application of coins to the palmar skin of nickel-sensitized individuals. Methods: Three experiments were conducted. Experiments 1 and 2 checked the release of nickel from 1-and 2-euro coins by using the dimethylglyoxime test. In experiment 3, the elicitation of positive reactions was checked by applying coins to the palmar skin for 48 h under occlusion in nickel-sensitized and non-sensitized individuals. Results: The dimethylglyoxime test for release of nickel was positive in all cases. Positive patch test reactions to euro coins applied to the palmar skin of nickel-sensitized individuals were observed at 48 and 96 h. Conclusion: The results show that positive patch test reactions to euro coins can be obtained from nickel-sensitized individuals after 48 h of application to the palmar skin under occlusion. These results do not contradict other experiments in which repeated handling of coins was unable to provoke fingertip allergic contact dermatitis. A dose-response relationship is a credible explanation to support such potential discrepancies.

Effectiveness of measures aiming to stabilize urban gullies in tropical cities:Results from field surveys across D.R.Congo

Urban gullies are a rapidly growing concern in many tropical cities of the Global South.Various measures are already implemented for their stabilization.However,an overview of these measures and their overall effectivenesss is currently lacking.We aim at addressing this gap by documenting existing ini-tiatives to stabilize urban gullies in D.R.Congo and assessing their overall effectiveness.To this end we conducted extensive field campaigns in Kinshasa,Kikwit and Bukavu and combined our terrain obser-vations with data on gully expansion rates(derived from series of satellite imagery).In total,we char-acterized present and past stabilization initiatives for 398 urban gullies.For 69 of these gullies,the effect of a specific measure on gully expansion rates could be estimated.Results show that for the large ma-jority of gullies,various measures have been implemented.Yet,these are mainly ad-hoc measures installed by the affected population.More structural measures based on larger engineering works were observed for only 20-30%of gullies.The huge efforts invested in the installation of measures strongly contrast with their overall low impact Among all strategies,only the deviation of runoff resulted in significantly lower expansion rates after installation.The numerous initiatives that rely on the sparse means available seem to have limited effects.This does not imply,however,that they are completely ineffective and should be abandoned.Based on our findings,we formulate recommendations for further research on how to effectively prevent and stabilize urban gullies,taking into account the difficult environmental and socio-economic context.

Synthetic hexaploid wheat and its utilization for wheat genetic improvement in China

Synthetic hexaploid wheat （Triticum turgidum x Aegilops tauschii） was created to explore for novel genes from T. turgidum and Ae. tauschii that can be used for common wheat improvement. In the present paper, research advances on the utilization of synthetic hexaploid wheat for wheat genetic improvement in China are reviewed. Over 200 synthetic hexaploid wheat （SHW） accessions from the International Maize and Wheat Improvement Centre （CIMMYT） were introduced into China since 1995. Four cultivars derived from these, Chuanmai 38, Chuanmai 42, Chuanmai 43 and Chuanmai 47, have been released in China. Of these, Chuanmai 42, with large kernels and resistance to stripe rust, had the highest average yield （〉 6 t/ha） among all cultivars over two years in Sichuan provincial yield trials, outyielding the commercial check cultivar Chuanmai 107 by 22,7%. Meanwhile, by either artificial chromosome doubling via colchicine treatment or spontaneous chromosome doubling via a union of unreduced gametes （2n） from T. turgidum-Ae, tauschii hybrids, new SHW lines were produced in China. Mitotic-like meiosis might be the cytological mechanism of spontaneous chromosome doubling. SHW lines with genes for spontaneous chromosome doubling may be useful for producing new SHW-alien amphidiploids and double haploid in wheat genetic improvement.

Performance measurement of sericin-coated silks during aging

Silks are among the most precious ancient and historic artefacts worldwide. While washing removes the natural gum from the fibres during the fabrication of most silk textiles, for a small proportion of historic silks some or perhaps all of the sericin still remains. This paper investigated the effect of sericin coating on the aging of silk fibroin by means of ATR and tensile testing. The results show that sericin can provide some extent of protection from light and heat aging. However, in high humidity environments degummed and ungummed silk aged at the same rate because of leaching of sericin. Silk degraded at faster rate and more extensively in a moist environment. ATR could give very useful information about the aging of silk. The ATR-derived crystallinity index is good at tracing the aging factor and extent of silk deterioration. Alanine and tyrosine within fibroin, as estimated by ATR spectroscopy, are very sensitive to light, but not to heat and water. The ATR absorbance intensity ratio Iamide Ⅲ/ Iamide I is very useful for deterioration evaluation of archaeological silk objects. As a high humidity resulted in the leaching of silk, it is suggested for sericin-coated silk in collections, that not only wet cleaning is harmful, but also that storage or display in a high RH environment would be detrimental.

基于PCA人脸识别原理

文章主要讨论了人脸识别灰度化、生物特征的几种方法和原现,以及如何实现灰度化。同时分析了一种常见却并不妥当的灰度化实现,以及证明了opencv的灰度化是使用"加权灰度化"法,能从整体上反映人脸图像的灰度相关性具有一定的实用价值。

一种基于KMP算法思想的字符串匹配算法的研究与实现

KMP算法是一种高效的字符匹配算法,它的思想在于其在匹配失败以后,不需要再对内容字符序列从头匹配,这样就减少了匹配的次数,提高效率。本方通过举例比较说明这个算法的优点。

C++与Java的数据库操作比较

数据库的操作速度是相关产品性能的主要衡量指标,不同语言对数据库的操作速度也不尽相同。本文通过对C++和Java两种语言对数据库的不同操作,编写测试用例,执行DQL(数据库查询语言)和DML(数据库操纵语言)语句访问ORACLE数据库,通过对比执行效率来分析两种语言的优劣,进而指导我们对编程语言的选择。

基于互联网大数据的自然语义分析研究

随着互联网中的自然语言数量越来越庞大,各种自然语言处理技术在不同行业的需求也日益增长,同时一些新的算法和模型也应运而生。本文首先对这些自然语言处理技术进行了研究与比较,然后应用这些技术于互联网数据上,对比了不同参数下算法的性能,实现了对互联网数据的自动分类。

内存房间管理在多人游戏中的研究与设计

多人玩法允许多个人在同一个房间中互动游戏。本文主要描述了内存房间的业务逻辑和功能,多个房间在内存中的实现方式和效率优势,研究了内存房间列表、超时事件列表和异步任务队列的原理及设计实现。

Global analysis of cover management and support practice factors that control soil erosion and conservation

Cover management and support practices largely control the magnitude and variability of soil erosion.Although soil erosion models account for their importance(particularly by C-and P-factors in the Revised Universal Soil Loss Equation),obtaining spatially explicit quantitative field data on these factors remains challenging.Hence,also our insight into the effects of soil conservation measures at larger spatial scales remains limited.We analyzed the variation in C-and P-factors caused by human activities and climatic variables by reviewing 255 published articles reporting measured or calculated C-and P-factor values.We found a wide variation in both factor values across climatic zones,land use or cover types,and support practices.The average C-factor values decreased from arid(0.26)to humid(0.15)climates,whereas the average P-factor values increased(from 0.33 to 0.47,respectively).Thus,support practices reduce soil loss more effectively in drylands and drought-prone areas.The global average C-factor varies by one order of magnitude from cropland(0.34)to forest(0.03).Among the major crops,the average C-factor was highest for maize(0.42)followed by potato(0.40),among the major orchard crops,it was highest for olive(0.31),followed by vineyards(0.26).The P-factor ranged from 0.62 for contouring in cropland plots to 0.19 for trenches in uncultivated land.The C-factor results indicate that cultivated lands requiring intensive site preparation and weeding are most vulnerable to soil loss by sheet and rill erosion.The low P-factor for trenches,reduced tillage cultivation,and terraces suggests that significantly decreased soil loss is possible by implementing more efficient management practices.These results improve our understanding of the variation in C-and P-factors and support large-scale integrated catchment management interventions by applying soil erosion models where it is difficult to empirically determine the impact of particular land use or cover types and support practices:the datasets compiled in this study can support further modeling and land management attempts in different countries and geographic regions.