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六、美国和缅甸:合作对付毒品的威胁

南洋资料译丛 1976年第3期 40-41页

作者： m.c.滕舟

毒品的生产和走私仍然是美国和缅甸两国面临的一个严重问题。臭名昭著的“金三角”位于缅甸、老挝和泰国边境的交界处,系种植鸦片的山区,面积有六万平方英里。因为“金三角”也有一部分在缅甸境内,所以鸦片和诸如玛啡、海洛因等衍生物... 详细信息

毒品的生产和走私仍然是美国和缅甸两国面临的一个严重问题。臭名昭著的“金三角”位于缅甸、老挝和泰国边境的交界处,系种植鸦片的山区,面积有六万平方英里。因为“金三角”也有一部分在缅甸境内,所以鸦片和诸如玛啡、海洛因等衍生物就从“金三角”经过缅甸运往其它目的地—一主要是美国。缅甸一直在采取强有力的措施,禁止种植鸦片并截捕出入该国的鸦片和海洛因的走私者。为了帮助缅甸进行这项工作,美国已经提供了两架直升飞机,并且答应再给十架。其中有一架直升飞机参加了最近对靠近泰缅边界的城镇孟萨的一家海洛因制造厂的成功的袭击,有两百个叛军在这家工厂里从事海洛因的制作。

关键词：缅甸出口进口美利坚合众国北美洲美国缅元

Advanced Pull Test to Determine Adhesion Properties of Thin Surfaces for Pavement

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Advanced Pull Test to Determine Adhesion Properties of Thin ...

INFLUENcES OF cASTING SPEED AND SEN DEPTH ON FLUID FLOW IN THE FUNNEL TYPE mOLD OF A THIN SLAB cASTER

ISAP2012重载沥青路面和桥面铺装专题会议

作者： Y.Xiao m.F.c.van de Ven S.P.Wu m.F.Woldekidan Faculty of civil Engineering & Geosciences Delft University of Technology State Key Laboratory of Silicate materials for Architectures Wuhan University of Technology

＜正＞Thin surfaces are specially designed to provide significant additional surface properties to pavements without affecting other qualities of the surface such as ride quality and *** addition to economic benefits,thin surfaces can protect pavements against deterioration caused by traffic and *** of the most important properties of thin surfaces is their adhesion to the substrate *** order to avoid bond failure and/or slippage between the thin surface and the pavement layer,a strong adhesive strength is *** equipment and methods,such as

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Acta metallurgica Sinica(English Letters) 2007年第1期20卷 15-26页

作者： B.W. Li X.Y. Tian E.G. Wang J.c. He Key Laboratory of National Education ministry for Electromagnetic Processing of materials Northeastern University Shenyang 110004 China

In recent years, thin slab continuous casting technology has been widely used to improve the quality of the product and to reduce the cost. One of the challenges faced by this technology is to design reasonable flow patterns, which strongly affect the surface and inner properties of the final slab in the mold. With the fixed scales and complex geometrical structures of nozzle and funnel type mold, a series of numerical simulations are made to analyze the flow patterns in melt steel using finite volume method based on structured body fitted coordinate grids. The cFD （computational fluid dynamics） package is validated first using one typical case described in previously published studies, and then it is developed to study the effect of operational parameters on fluid flow in thin slab caster. Two operational parameters, casting speed and SEN （submerged entry nozzle） depth, are mainly considered for numerical analysis. On the basis of present simulations, the reasonable SEN submergence depths corresponding to different casting speeds are suggested according to fluid flow characteristics like, flow jet impingement on the narrow side of the mold, flow speed of the melt steel beneath the meniscus and the recirculation region. This is the first stage of study on the numerical analysis of the whole thin slab casting process with electromagnetic brake.

关键词： continuous casting thin slab submerged entry nozzle (SEN) numerical analysis funnel type mold standard k-ε model RNG (renormalization group) k-ε model

Synthesis and reactions of 4-aryl-1(2H) phthalazinones

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chinese Journal of chemistry 1991年第1期9卷 45-53页

作者： SAYED,m.A. ISLAm,I. mOHAmED,A.A. SOLImAN,A.Y. BAKEER,H.m. Department of chemistry Faculty of ScienceAin Shams and El-Azher UniversitiesEgypt Department of chemistry Faculty of Education at FayoumCairo UniversityEgypt

The behavior of 4-aryl-1(2H)-phthalazinones (1a-c) toward some electrophilic and nucleophilic reagents has been described with the aim of preparing some new phthalazinone deriva- tives of the expected pharmacological ... 详细信息

关键词： Synthesis and reactions of 4-aryl-1 phthalazinones

An experimental investigation on pulse transit time and pulse arrival time using ecg, pressure and ppg sensors

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medicine in Novel Technology and Devices 2023年第1期17卷 116-122页

作者： Sukesh Rao m. Narendra K.c Adithi K. Sanith c.Bangera Department of Electronics and communication Engineering NMAM Institute of TechnologyNitteNitte Deemed to be UniversityNitte-574110KarnatakaIndia Department of General medicine K.S.Hegde Medical AcademyNitte Deemed to be UniversityMangaloreKarnatakaIndia

Pulse transit time(PTT)and pulse arrival time(PAT)are explored using multiple sensors connected to the human *** wave velocity(PWV)is indirectly computed using *** conducted a study using EcG,Pressure,and PPG sensor to capture the PAT and PTT information *** PAT and three PTT values were obtained from the *** electrocardiograph(EcG/EKG)is used as a reference signal for three PAT *** values were obtained using pressure and PPG sensors connected at the wrist and fingertip respectively.A pressure sensor module was constructed to measure PTT at the wrist and the results were compared with the other standard reference *** rate variability was found to be relatively lower in both EcG and PPG sensors as compared with pressure sensors at the *** PAT obtained from EcG and PPG sensor was found to have the least variation of 0:386±0:037 sec with 9.58% of the *** at the wrist captured using a pressure sensor was recorded to be 0:026±0:013 sec with 50% of the *** values measured using EcG and pressure sensor were found to be correlating with EcG and *** experimental result indicates different ranges of the PWV which indicates that the flow velocity of the blood varies with different *** can be effectively computed from pressure and PPG sensors,and this makes it possible to extract different pulse features in the wearable devices without the need of EcG signal or PAT as reference.

关键词： Pressure Sensor Pulse Artery Wrist Signal

DYNAmIc cHARAcTERISTIcS OF BEARINGS AND PIVOTS OF HARD DISK DRIVES

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DYNAMIC CHARACTERISTICS OF BEARINGS AND PIVOTS OF HARD DISK ...

Vision and development in Trichoderma atroviride

第五届国际振动工程会议

作者： N.Guo L.m.Xu R.m.Lin H.Du c.D.Deng School of mechanical and Production Engineering Nanyang Technological University Singapore 639798 School of mechanical and Production Engineering Nanyang Technological University Singapore 639798 School of mechanical and Production Engineering Nanyang Technological University Singapore 639798 School of mechanical and Production Engineering Nanyang Technological University Singapore 639798 Nidec Singapore Pte Ltd 36 Loyang WaySingapore

＜正＞ It is known that the quasi-rigid bodymode（QR mode）vibration is one of the mainsources for generating the residual vibration insettling operation and limiting the servo bandwidth,and is mainly caused by the stiffness of the pivot,themass and structure of the head actuator *** ballbearings inside the pivot determine the pivotstiffness,which in turn,determine the effectivestiffness of the head actuator *** this paper,the stiffness-related issues among ball bearings,pivot and head actuator assembly are studiedtheoretically and *** shows that thepivot effective radial stiffness depends not only onthe stiffness of the ball bearing but also on theconnection method used to attach the pivot to thehead actuator *** is also shown from themeasurement and analysis that the resonancefrequency of the QR mode,determined by the pivoteffective radial stiffness and inherent properties ofthe head actuator arm,can be moved to a higherfrequency by using a more rigid pivot and a morestiff joint.

关键词： ball bearing pivot stiffness natural frequency hard disk drive

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浙江大学学报(农业与生命科学版) 2004年第4期30卷 390-390页

作者： casas S cortés c Ríos m Rosales T Bibbins m Olmedo V Herrera-Estrella A Department of Genetic. Engineering Centro de Investigación y de Estudios Avanzados Unidad Irapuato. Apartado Postal 629 36500 Irapuato Gto. Mexico

Phototropism, the induction of carotenogenesis and reproductive structures, and resetting of the circadian rhythm are controlled by blue light. Trichoderma is used as a photomorphogenetic model due to its ability to conidiate upon exposure to light. In total darkness, T. atroviride grows indefinitely as a mycelium provided that nutrients are not limiting. However, nutrient deprivation and light trigger the conidiation process. A pulse of blue light given to a radially growing colony induces synchronous sporulation. A ring of conidiophores bearing green conidia is produced at what had been the colony perimeter at the time of the light pulse. All known responses to blue light in N. crassa are initiated by a couple of transcription factors encoded by the white-collar genes (wc -1 and wc-2). Wc-1 and Wc-2 bind to the promoters of light regulated genes to rapidly activate transcription in response to light. In T. atroviride the photolyase encoding gene phr1 undergoes fast transcriptional activation in response to light. The presence of putative Wcc binding boxes in the promoter of phr1, suggested that light responses in Trichoderma could be under the control of white-collar homologues. We cloned two genes and demonstrated by gene replacement that both are essential for photoconidiation and photolyase gene expression. Therefore, they were named blue-light regulator one and two (blr1 and blr2). The BLR1 protein has all the characteristics of a blue-light photoreceptor. The generation of subtractive cDNA libraries allowed us to identify novel, BLR independent, light responses including the regulation of gene expression by blue-light. In addition, we recently initiated a Trichoderma ESTs sequencing project. Until now, we have sequenced above 3000 ESTs, from which we have obtained approximately 1800 unigenes. This unigene set was printed in microarrays and used to search for light induced genes. Twenty five clearly induced and around thirty repressed genes have been detected.

关键词： light-perception conidiation microarrays white-collar cAmP

Broadband athermal waveguides and resonators for datacom and telecom applications

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Photonics Research 2018年第11期6卷 987-990页

作者： LIUQING HE YUHAO GUO ZHAOHONG HAN KAZUmI WADA JURGEN mIcHEL ANURADHA m.AGARWAL LIONEL c.KImERLING GUIFANG LI LIN ZHANG Key Laboratory of Opto-electronic Information Technical Science of ministry of Education School of Precision Instruments and Opto-electronics Engineering Tianjin University Key Laboratory of Integrated Opto-electronic Technologies and Devices in Tianjin School of Precision Instruments and Opto-electronics Engineering Tianjin University Department of materials Science and Engineering Massachusetts Institute of Technology Department of materials Engineering University of Tokyo college of Optics and Photonics CREOL and FPCE University of Central Florida

The high-temperature sensitivity of the silicon material index limits the applications of silicon-based micro-ring resonators in integrated photonics. To realize a low but broadband temperature-dependent-wavelength-shift microring resonator, designing a broadband athermal waveguide becomes a significant task. In this work,we propose a broadband athermal waveguide that shows a low effective thermo-optical coefficient of1 × 10^(-6)∕K from 1400 to 1700 nm. The proposed waveguide shows a low-loss performance and stable broadband athermal property when it is applied to ring resonators, and the bending loss of ring resonators with a radius of >30 μm is 0.02 dB/cm.

关键词： TOc telecom applications TiO SiO

LASER cLADDED TicN cOATINGS ON THE SURFAcE OF TITANIUm

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Acta metallurgica Sinica(English Letters) 2007年第3期20卷 210-216页

作者： Y.L. Yang D. Zhang H.S. Kou c. S. Liu college of Science Northeastern University Shenyang 110004 China college of material and metallurgy Northeastern University Shenyang 110004 China

Laser cladded coatings of TicN were produced on the surface of titanium. To obtain the optimal techniques, several conditions were tested by varying the laser scanning rate. The choice of shielding gas was also studied. The cladded coatings were then evaluated from the surface mechanics point of view based on their microhardness. The microstructure of some interesting samples was investigated by optical micrographs （Om）. The results showed that under the condition of fixed pulse frequency and pulse width, the laser scanning rate and the shielding gas are the main factors influencing the components of coatings. TicN coatings were decompounded and oxidized during the cladding process in the condition of no shielding gas of N2. X-ray diffraction results indicated that the composite coatings composed of TicN, Tic, Ti2N, and TiO2 were produced using appropriate techniques. The results indicated that the best condition in terms of the surface microhardness is obtained when the scanning rate is 1.5mm/s, the pulse frequency is 15Hz, the pulse width is 3.0ms, and N2 is chosen as the shielding gas. The microhardness of the composite coatings is about 1331kg · mm^-2, which is about 4 times that of the substrate. The optical micrographs indicated that the cladding zone is made up of TicN, TiO2 and some interdendritic Ti, but the diffusion zone mainly consists of the dendrites phase, and the cladded depth is about 80μm, which is more than 2 times that of the laser nitrided sample. There were no microcracks or air bubbles in the cladded sample, which was cladded using the above optimal techniques.

关键词： laser cladding TicN coating titanium