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Bringing Norwegian mine into world of bits and bytes——possibilities and pitfalls

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中国有色金属学会会刊：英文版 2005年第S1期15卷 262-265页

作者： S. l. Ellefmo E. ludvigsen Department of Geology and Mineral resources Engineering Norwegian University of Science and Technology NorwayDepartment of Geology and Mineral Resources Engineering Norwegian University of Science and Technology Norway

rana Gruber AS is a mining company situated in northern Norway, just south of the artic circle. The hematite/magnetite ore is low grade, steeply dipping and intensively folded. The company excavates about 1.2 million tonnes of ore annually. The mining method is sublevel stoping. The final products are a hematite concentrate and different magnetite-products. The bits and bytes based methods and systems implemented for production planning and controlling are presented in the paper. Focus is on geological modelling, utilisation of variations in the deposit and associated uncertainty accumulating throughout the value chain. The methods and systems enable the mining department in greater extent than before, to deliver fragmented ore according to the specifications given by the processing plant.

关键词： mining geological variations uncertainty

Partial least square modeling of hydrolysis: analyzing the impacts of pH and acetate

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Journal of Environmental Sciences 2006年第4期18卷 805-809页

作者： lü Fan HE Pin-jing SHAO li-ming State Key laboratory of Pollution Control and resources reuse Tongji University Shanghai 200092 China

pH and volatile fatty acids both might affect the further hydrolysis of particulate solid waste, which is the limiting-step of anaerobic digestion. To clarify the individual effects of pH and volatile fatty acids, batch experiments were conducted at fixed pH value （pH 5-9） with or without acetate （20 g/l）. The hydrolysis efficiencies of carbohydrate and protein were evaluated by carbon and nitrogen content of solids, amylase activity and proteinase activity. The trend of carbohydrate hydrolysis with pH was not affected by the addition of acetate, following the sequence ofpH 7〉pH 8〉pH 9〉pH 6〉pH 5; but the inhibition of acetate （20 g/l） was obvious by 10%-60 %. The evolution of residual nitrogen showed that the effect of pH on protein hydrolysis was minor, while the acetate was seriously inhibitory especially at alkali condition by 45%-100 %. The relationship between the factors （pH and acetate） and the response variables was evaluated by partial least square modeling （PlS）. The PlS analysis demonstrated that the hydrolysis of carbohydrate was both affected by pH and acetate, with pH the more important factor. Therefore, the inhibition by acetate on carbohydrate hydrolysis was mainly due to the corresponding decline of pH, but the presence of acetate species, while the acetate species was the absolutely important factor for the hydrolysis of protein.

关键词： inhibition hydrolysis pH volatile fattyacids partial least square

Accommodative intraocular lenses:where are we and where we are going

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Eye and Vision 2017年第1期4卷 81-92页

作者： Jorge l.Alió Jorge l.Aliódel Barrio Alfredo Vega-Estrada Cornea Cataract and Refractive Surgery UnitVissum CorporaciónAvda de Denia s/nEdificio Vissum03016 AlicanteSpain Division of Ophthalmology Universidad Miguel HernándezAlicanteSpain

Presbyopia still remains the last frontier of refractive *** surgical management is under constant evolution due to the limitations that exist today with respect to its management,which is probably in relation with the multifactorial basis in which presbyopia is clinically developed in the *** currently,virtually all surgical techniques that have been proposed for its correction are based on the induction of pseudoaccommodation in the presbyopic eye,including ***,the real restoration of accommodation is more complex,and it has been tried by the use of different,so called,“accommodative”pseudophakic intraocular lenses(AIOl).Overall,the reported results with these lenses by independent authors have been modest in relation with the restoration of the accommodative power of the eye and these modest benefits are usually lost with time due to the long term changes in the capsular *** fact made these lenses to be almost abandoned in the last few years,but there are currently other AIOl models being used with innovative mechanisms of action and different anatomical support outside the capsular bag that offer encouraging preliminary results that could bring a new potential of application to these types of *** this article,we will update the modern refractive surgeon about the fundamentals and provide updated information about the outcomes of AIOls by reviewing the concept of accommodation,the different attempts that have been accomplished in the past,their demonstrated published results in human clinical trials,and the future alternatives that may arrive in the near future.

关键词： Accommodation Accommodative intraocular lens Presbyopia

Effects of hydraulic retention time, temperature, and effluent recycling on efficiency of anaerobic filter in treating rural domestic wastewater

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Water Science and Engineering 2014年第2期7卷 168-182页

作者： John leju Celestino lADU Xi-wu lü School of Energy and Environment Southeast University College of Natural resources and Environmental Studies University of Juba

With rural population expansion and improvement of the socio-economic standard of living, treatment of rural domestic wastewater has rapidly become a major aspect of environmental concern. Selection of a suitable method for treatment of rural domestic wastewater depends on its efficiency, simplicity, and cost-effectiveness. This study investigated the effects of hydraulic retention time （HrT）, temperature, and effluent recycling on the treatment efficiency of an anaerobic filter （AF） reactor. The first round of experimental operations was run for three months with HrTs of one, two, and three days, temperatures of 18℃, 21℃, and 24℃, and no effluent recycling. The second round of experimental operations was conducted for another three months with HrTs of three and four days; temperatures of 30.67℃, 30.57℃, and 26.91 ℃ ; and three effluent recycling ratios of 1：1, 1：2, and 2：1. The first round of operations showed removal rates of 32% to 44% for COD, 30% to 35% for TN, 32% to 36% for NH4-N, 19% to 23% for NO3-N, and 12% to 22% for TE In the second round of operations, the removal rates varied from 75% to 81% for COD, 35% to 41% for TN, 31% to 39% for NH4-N, 30% to 34% for NO3-N, and 41% to 48% for TP. The average gas production rates were 6.72 l/d and 7.26 l/d for the first and second rounds of operations, respectively. The gas production rate increased in the second round of operations as a result of applied effluent recycling. The best removal efficiency was obtained for an optimum HrT of three days, a temperature of 30℃, and an effluent recycling ratio of 2：1. The results show that the removal efficiency of the AF reactor was affected by HrT, temperature, and effluent recycling.

关键词： anaerobic filter (AF) rural domestic wastewater hydraulic retention time (HrT) effluent recycling experimental operation

A preliminary analysis of fishery resource exhaustion in the context of biodiversity decline

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Science China Earth Sciences 2016年第11期59卷 223-235页

作者： ZHAO ShuJiang lü BaoQiang lI ruWei ZHU AiYi WU ChangWen School of Marine Science and Technology Zhejiang Ocean University Zhoushan 316022 China Marine Environmental Monitoring Central Station of Wenzhou State Oceanic Administration People's Republic of China Wenzhou 325013 China

Marine biodiversity in almost all oceans is being threatened at the genetic, species, and ecosystem levels. The marine ecosystem is being degraded and the extinction rate of marine organisms has accelerated. In this paper, the potential causes of fishery resource exhaustion in the East China Sea are analyzed, including the change in the stoichiometric composition of seawater with regard to the concentrations of N and P, toxic effects of marine pollution, marine habitat destruction, increased seawater temperatures caused by climate warming, ocean acidification, pressure from overfishing, and the spread of marine pathogenic bacteria. It is believed that the factors mentioned above have significant impact on the exhaustion of fishery resources in the East China Sea. However, considering the cumulative, synergistic, and superimposed effects as well as the amplification effects resulting from their interactions, the actual risk of ecological extinction of marine organisms might be even more severe than that previously estimated. Hence, ecosystem management and research focused on a single risk factor or influencing factor is not enough to prevent marine ecosystem degradation and fishery resource exhaustion. A comprehensive, systematic, effective, and ecosystem-based management policy is imperative for healthy and sustainable fishery development in the East China Sea.

关键词： Fishery resources Exhaustion Extinction Influencing factor Cumulative effect Superimposed effect Amplifi-cation effect

Preliminary Study of a Hybrid Helicon-ECr Plasma Source

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Plasma Science and Technology 2016年第8期18卷 832-836页

作者： A.M.HAlA l.OKSUZ ZHU Ximing The National Center for Applied Physics Material Science Research InstituteKing Abdul Aziz City for Science and Technology(KACST) Süleyman Demirel University Science and Literature FacultyPhysics Department Institute for Plasma and Atomic Physics Ruhr University

A new type of hybrid discharge is experimentally investigated in this work. A helicon source and an electron cyclotron resonance（ECr） source were combined to produce plasma. As a preliminary study of this type of plasma, the optical emission spectroscopy（OES） method was used to obtain values of electron temperature and density under a series of typical conditions. Generally,it was observed that the electron temperature decreases and the electron density increases as the pressure increased. When increasing the applied power at a certain pressure, the average electron density at certain positions in the discharge does not increase significantly possibly due to the high degree of neutral depletion. Electron temperature increased with power in the hybrid *** mechanisms of these preliminary observations are discussed.

关键词： helicon plasma ECr hybrid discharge

Exceptionally high genetic variance of the doubled haploid(DH)population of poplar

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林业研究:英文版 2023年第6期34卷 1941-1950页

作者： Caixia liu Sui Wang Yi liu Meng Wang Erqin Fan Chen liu Shikai Zhang Chuanping Yang Junhui Wang Heike W.Sederoff Xiangling You Vincent l.Chiang Su Chen ronald r.Sederoff Guanzheng Qu College of life Science Northeast Forestry UniversityHarbin 150040People’s Republic of China State Key laboratory of Tree Genetics and Breeding Northeast Forestry UniversityHarbin 150040People’s Republic of China Key laboratory of Soybean Biology in Chinese Ministry of Education Northeast Agricultural UniversityHarbin 150030People’s Republic of China State Key laboratory of Tree Genetics and Breeding Key Laboratory of Tree Breeding and Cultivation of State Forestry AdministrationResearch Institute of ForestryChinese Academy of ForestryBeijing 100091People’s Republic of China Department of Plant and Microbial Biology North Carolina State UniversityRaleighNC 27695USA Forest Biotechnology Group Department of Forestry and Environmental ResourcesNorth Carolina State UniversityRaleighNC 27695USA

Doubled haploid(DH)plants have been widely used for breeding and biological research in *** ulus *** been used as model woody plant species for biological ***,the induction of DH poplar plants is onerous,and limited biological or breeding work has been carried out on DH individuals or *** this study,we provide an effective protocol for poplar haploid induction based on an anther culture method.A total of 96 whole DH plant lines were obtained using an F1hybrid of Populus simonii×*** as a donor *** phenotypes of the DH population showed exceptionally high variance when compared to those of half-sib progeny of the donor *** DH line displayed distinct features compared to those of the other DH lines or the donor ***,some excellent homozygous lines have the potential to be model plants in genetic and breeding studies.

关键词： Populus Anther culture Doubled haploid Genetic variance Flow cytometry

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照明系统中基于模糊逻辑的亮度控制策略研究

中国照明电器 2024年第8期 43-45,90页

作者：周鹏辉吕隆飞周口师范学院机械与电气工程学院河南周口466000

模糊逻辑能够模拟人类的决策逻辑,并通过处理不确定性和模糊性数据,提供优化照明强度和能源消耗的有效方法。文章对照明系统中基于模糊逻辑的亮度控制策略进行了深入研究,以期通过理论分析与实际应用相结合的方法,进一步探索和验证模糊... 详细信息

模糊逻辑能够模拟人类的决策逻辑,并通过处理不确定性和模糊性数据,提供优化照明强度和能源消耗的有效方法。文章对照明系统中基于模糊逻辑的亮度控制策略进行了深入研究,以期通过理论分析与实际应用相结合的方法,进一步探索和验证模糊逻辑控制在智能照明中的潜力和有效性。

关键词：照明系统模糊逻辑亮度控制

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面向56 Gb/s高速SerDes接收机DSP设计

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计算机工程与科学 2024年第7期46卷 1202-1209页

作者：胡小月王强吕方旭许超龙张锦国防科技大学计算机学院湖南长沙410073 长沙理工大学计算机与通信工程学院湖南长沙410004

高速接口芯片是高性能互连网络通信中的一款重要IP,针对56 Gb/s四脉冲幅度调制信号在高性能互连网络背板通信中,由于传输距离长信道衰减严重导致误码率高的问题,提出一种面向56 Gb/s高速Serdes接收机DSP设计。该DSP采用64路并行结构,通... 详细信息

高速接口芯片是高性能互连网络通信中的一款重要IP,针对56 Gb/s四脉冲幅度调制信号在高性能互连网络背板通信中,由于传输距离长信道衰减严重导致误码率高的问题,提出一种面向56 Gb/s高速Serdes接收机DSP设计。该DSP采用64路并行结构,通过16抽头前向反馈均衡器,以及1抽头预判决反馈均衡器对接收端数字化后的信号进行处理;采用基于K-均值聚类算法生成动态变化的判决电平并结合最小均方误差算法,能够处理15~35 dB不同信道衰减下的均衡问题。为了验证算法的性能,还搭建了一个基于模拟前端芯片和现场可编程门阵列的实验验证平台。实验结果表明,在信道衰减为15~35 dB@14 GHz,速率为56 Gb/s的条件下,误码率均小于5e-10。

关键词： K-均值算法前向反馈均衡预判决反馈均衡自适应均衡