检索结果-内蒙古大学图书馆

Green synthesis of NiO nanoparticles using a Cd hyperaccumulator (Lactuca sativa L.) and its application as a Pb(II) and Cu(II) adsorbent

引用

Environmental Nanotechnology, Monitoring and Management 2024年 21卷

作者： Hamdan, Abd Mujahid sardi, Arif Reksamunandar, Rhyan Prayuddy Maulida, Zahratul Arsa, Dwi Ardiana Lubis, syafrina sari Nisah, Khairun Department of Enginering Physics Faculty of Science and Technology UIN Ar-Raniry Banda Aceh Jln. Syekh Abdurrauf No 1 Darussalam Banda Aceh 23111 Indonesia Department of Biology Faculty of Science and Technology UIN Ar-Raniry Banda Aceh Jln. Syekh Abdurrauf No 1 Darussalam Banda Aceh 23111 Indonesia Department of Madrasah Ibtidaiyah Teacher Education Faculty of Tarbiyah and Teacher Training Jl. Dr. S. H. Sarundajang Ringroad I Sulawesi Utara Manado 95128 Indonesia Postgraduate Program Master of Environmental Management Syiah Kuala University Jln. Tgk. Chik Pante Kulu Banda Aceh Darussalam 23111 Indonesia Department of Environmental Engineering Faculty of Science and Technology UIN Ar-Raniry Banda Aceh Jln. Syekh Abdurrauf No 1 Darussalam Banda Aceh 23111 Indonesia Department of Chemistry Faculty of Science and Technology UIN Ar-Raniry Banda Aceh Jln. Syekh Abdurrauf No 1 Darussalam Banda Aceh 23111 Indonesia

The proliferation of heavy metal contamination, namely, lead and copper, has emerged as a pervasive worldwide peril to human existence. One potential solution for addressing this issue is the utilization of nanoparticle adsorption, specifically for nickel oxide nanoparticles. However, to promote environmental sustainability, scholarly studies have identified green synthesis as a prospective methodology. The process of cadmium phytoremediation, although offering a potential remedy for heavy metal contamination, gives rise to apprehensions surrounding the proper disposal of cadmium hyperaccumulator plant biomass. Hence, it is imperative to establish suitable strategies for the disposition or usage of this biomass. The utilization of hyperaccumulator extracts for the eco-friendly production of nickel oxide nanoparticles remains unexplored in the current literature. The main aim of this research is to explore the possible application of Lactuca sativa L. as a plant species with the ability to accumulate high levels of cadmium. The study also seeks to examine the efficacy of utilizing these plants in the fabrication of nickel oxide nanoparticles and evaluate their capacity to absorb lead and copper ions. The characterization of nickel oxide nanoparticles is conducted through a range of techniques, encompassing scanning electron microscopy, energy dispersive X-ray spectroscopy, X-ray diffraction, X-ray fluorescence, Fourier transform infrared spectroscopy, transmission electron microscopy, Brunauer-Emmett-Teller spectroscopy, and vibrating sample magnetometry. The present work achieved successful utilization of Lactuca sativa L. extract for the manufacture of nickel oxide nanoparticles, which showed notable efficacy as an adsorbent for lead and copper. The synthesis of nickel oxide nanoparticles using an extract from Lactuca sativa L. has demonstrated the viability of utilizing hyperaccumulator biomass in the phytoremediation of cadmium. This finding presents a promising

关键词： Green synthesis Lactuca sativa L. Nanoparticle Nickel oxide Phytoremediation

来源：评论

学校读者我要写书评

暂无评论

MILITARY sIGNIFICANCE OF DEEP DIVING VEHICLEs

引用

Naval Engineers Journal 1963年第2期75卷 365-374页

作者： JACKsON, LAURENCE L. The author was commissioned in the U. S. Navy 6 June 1945 upon being graduated from the U. S. Naval Academy Annapolis Maryland. He served in various submarines until June 1951 when he was ordered to V. S. Naval Postgraduate School Monterey California. From there in 1954 having been awarded a Master of Science Degree Naval Engineering (Electrical) he reported for duty on a submarine then on a submarine squadron staff. In 1957 he began a three-year tour at Pearl Harbor Naval Shipyard. It was during this tour that he was selected to be an Engineering Duty Officer. From 1960 to 1962 Commander Jackson served at David Taylor Model Basin specializing in submarine RDT and E programs. During this tour he was awarded the Secretary of the Navy Commendation for Special Achievement. At present Commander Jackson is in the Ship Design Division of the Bureau of Ships serving as Submarine Program Officer for Hull Design. Commander Jackson is a member of the American Society of Naval Engineers. He has previously published an article in theJournalof the Societyof NavalEngineers(the predecessor of theNavalEngineersJournal)entitled “Submarine FRAM Program What and Why” May 1960.

来源：评论

学校读者我要写书评

暂无评论

sTRUCTURAL ANALYsIs AND DEsIGN OF A CATAMARAN CROss‐sTRUCTURE BY THE FINITE ELEMENT METHOD

引用

Naval Engineers Journal 1973年第1期85卷 33-42页

作者： MANsOUR, DR.A. FENTON, LCDR. PAUL H. Dr. A. Mansour an Associate Professor in the Department of Ocean Engineering at Massachusetts Institute of Technology received his Bachelor of Science degree in Mechanical Engineering from the University of Cairo in 1958 and his M.E. and Ph.D. degrees in Naval Architecture and Marine Engineering from the University of California at Berkeley in 1962 and 1966 respectively. He has had field experience and design responsibilities for about six years in the Suez Canal Authority John J. McMullen Associates Inc. and M. Rosenblatt and Son Inc. and has been with the Massachusetts Institute of Technology for the past four years. During this period he contributed several technical papers and reports in the areas of structural mechanics sea loads finite element analysis of marine structures and probabilistic structural mechanics. He has been a consultant for several companies and organizations is a member of Sigma Xi and SNAME currently serving as a member of the latter's Stress Analysis and Strength of Structural Elements Panel. USN Lieutenant Commander Paul H. Fenton USN a 1964 graduate of the U.S. Naval Academy recently completed a graduate education program at M.I.T. in the field of Naval Construction and Engineering earning two degrees: Ocean Engineer and Master of Science in Naval Architecture and Marine Engineering. He is presently assigned to the Charleston Naval Shipyard Charleston South Carolina and has had previous duty in the U.S.S. STICKELL (DD 888) and with the Naval Support Activity Saigon.

One of the problems encountered during the design of the AsR‐21 Catamaran is the determination of the effectiveness of the cross‐structure deck plating. In this paper, this problem is examined using the Finite Element Method. The behavior of a multicell box girder representing a catamaran cross‐structure is studied. Because of the relatively low length‐to‐breadth ratio of a typical catamaran cross‐structure, the deck plating effectiveness is found to be rather small. Parametric studies are performed, and curves of the effectiveness as a function of the relevant geometric and loading parameters are presented. These curves may be helpful in the early stages of new designs. © 1973 by the American society of Naval Engineers

关键词：

来源：评论

学校读者我要写书评

暂无评论

Applicability of zirconium loaded okara in the removal and recovery of phosphorus from municipal wastewater

引用

IOP Conference series: Earth and Environmental science 2019年第1期266卷

作者： T A H Nguyen H H Ngo W s Guo T Q Pham T H Cao T H H Nguyen Master's Program in Environmental Engineering VNU Vietnam Japan University Luu Huu Phuoc My Dinh 1 residential area Nam Tu Liem Hanoi Vietnam Centre for Technology in Water and Wastewater School of Civil and Environmental Engineering University of Technology Sydney (UTS) 15 Broadway Ultimo NSW 2007 Australia Graduate University of Science and Technology Vietnam Academy of Science and Technology 18 Hoang Quoc Viet Cau Giay Hanoi Vietnam Faculty of Geology VNU University of Science 334 Nguyen Trai Thanh Xuan Hanoi Vietnam

Recently, there is a new trend to consider wastewater as a precious resource. since phosphorus is a limited non-renewable element, and MAP (Magnesium Ammonium Phosphate - MgNH4PO4.6H2O) is a valuable slow-release fertilizer, the recovery of phosphorous as MAP has received special attention from scientists all over the world. However, the application of this process with municipal wastewater is still a challenge, due to low concentration of phosphorus and high volume of municipal wastewater. This study investigates the potential of reclaiming MAP from municipal wastewater by combination of adsorption and crystallization. soybean milk residue (okara) was loaded with Zirconium (Zr) to prepare the adsorbent (ZLO). Adsorption and desorption experiments were conducted in a semi-pilot scale ZLO packed colum system. Effects of P: N: Mg molar ratios, chemical sources and temperature on the formation of MAP were examined in an attempt to identify the optimal crystallization conditions. The attained precipitate was characterized using XRD, sEM, FTIR techniques. It was found that the ZLO packed column adsorption-desorption system could pre-concentrate phosphorus from municipal wastewater up to 28.36 times, fitting well the minimum requirement (50 mg P/L) for the economical MAP recovery. Up to 95.19% of dissolved phosphorus in desorption solution was recovered at pH = 9, Mg: N: P molar ratio = 2:2:1, using a combination of MgCl2.6H2O and NH4Cl. The harvested MAP exhibited high purity (92.59%), high P-availability (89% by mass), and extremely low levels of heavy metals. The results prove that it is viable to recover MAP from municipal wastewater by employing ZLO as adsorbent, followed by crystallization. This paves the way for mining phosphorus from municipal wastewater and reducing okara as an agricultural byproduct in a green way.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Flare gas recovery as one of the clean development mechanism (CDM) practices

引用

IOP Conference series: Earth and Environmental science 2018年第1期200卷

作者： M s sari Hadiyanto F Muhammad Master Program of Environmental Science School of Postgraduate Studies Diponegoro University Jl. Imam Bardjo S.H No. 5 Pleburan Semarang 50241 Indonesia Department of Chemical Engineering Faculty of Engineering Diponegoro University Jl. H. Prof. Soedarto SH. Tembalang Semarang 50275 Indonesia Department of Biology Faculty of Engineering Diponegoro University Jl. H. Prof. Soedarto SH. Tembalang Semarang 50275 Indonesia

Global warming has become an important issue over the last few decades. One of the causes is the presence of Greenhouse Gases (GHG) which is emitted by human activities. Oil and gas production (drilling, work over, and refinery) for energy consume will be followed by the associated gas. The associated gas will be flared due to safety and non-economic reasons. The objectives of this study are reviewing the environmental impact and utilize technologies from flaring gas. The impact of flaring gas can lead to a decrease in human health, increased GHG, changing the plant metabolism, and decrease the production of agricultural crops. Due to these, there are some technologies to reduce flaring such as: reinjection (EOR activities), PNG, LPG, LNG, CNG, NGH, GTE, and GTL. The flare gas recovery is expected to obtain the lower value of GHG in the air and as one of the clean development mechanism (CDM) practices with a rethink, reuse, reduce, recovery, and recycle principle.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Influence of amount of oxidizing slag discharged from stainless steelmaking process of electric arc furnace on elution behavior into fresh water

引用

Journal of Physics: Conference series 2012年第1期352卷

作者： s Yokoyama T shimomura M N N Hisyamudin T Takahashi M Izaki Department of Mechanical Engineering Toyohashi University of Technology Hibarigaoka Tempaku-cho Toyohashi Aichi 441-8105 Japan Graduate Program of Mechanical Engineering for Master's Degree Toyohashi University of Technology Hibarigaoka Tempaku-cho Toyohashi Aichi 441-8105 Japan Faculty of Mechanical and Manufacturing Engineering University Tun Hussein Onn Malaysia 86400 Parit Raja Batu Pahat Johor Malaysia Department of Chemical Science and Technology Miyakonojo National College of Technology Yoshio-cho Miyakonojo Miyazaki 885-8567 Japan

Fundamental study was carried out for provision for acidification of soil due to acid rain. The influence of weight of the additive slag on elution behavior of the slag into water was studied in this study. Elution experiment was carried out on a basis of JIs K 0058-1. Generally, the pH in the aqueous solution increased with an increase in weight of the additive slag. The pH converged to approximately eight. Calcium, magnesium and manganese, which were essential elements for plants, were eluted from the slag irrespective to elution condition. The eluted concentrations of Ca and Mg increased with an increase in weight of the additive slag. silicon and zinc were also eluted depending on the conditions. Aluminum that was harmful for plants was not eluted from the used slag.

关键词：

来源：评论

学校读者我要写书评

暂无评论

DEVELOPING A WHIP ANTENNA FOR sUBMARINE sERVICE

引用

Naval Engineers Journal 1963年第4期75卷 769-774页

作者： ALDEN, JOHN D. CARLsON, ARTHUR D. Commander John D. Alden entered the Navy via the V-7 Reserve Midshipman Program in 1942. His World War II submarine duty was aboard USS Lamprey (55372). He attended a post-war course in electronics engineering at MIT followed by sea duty on USS Sea Cat (55399) and USS Palau (CVE 122). Designated for engineering duty in 1950 his duty stations have included Electronic Supply Office Great Lakes SupShips Groton Connecticut San Francisco Naval Shipyard and Bureau of Ships. He has recently reported for duty at Portsmouth Naval Shipyard. Mr. Arthur D. Carlson graduated from the University of Connecticut in 1959 with a Bachelor of Science in Engineering and received his Master of Science in Engineering from the same school in 1963. From 1959 to 1963 he was employed at the U.S. Navy Underwater Sound Laboratory New London Connecticut where he worked on non-electrical problems of submarine antennas. He is presently employed by the Electric Boat Division of General Dynamics in its Applied Mechanics Section.

来源：评论

学校读者我要写书评

暂无评论

NEW AMPHIBIOUs VEHICLE programs: Part I: Air Cushion Vehicles

引用

Naval Engineers Journal 1965年第3期77卷 401-406页

作者： WOssER, J.L. The author is program manager for all air cushion vehicle (ACV) projects of Textron's Bell Aerosystems Company Buffalo New York. A veteran of 20 years in the U. S. Marine Corps Wosser retired in 1963 with the rank of Lieutenant Colonel. Since September 1958 Wosser has served as head of the Air Vehicle Design Branch of the Office of Naval Research in Washington D.C. In this post he was responsible for planning coordinating managing and providing technical supervision of a multi-million dollar contractor program of research and exploratory development. These programs included research in vertical/short takeoff and landing test vehicles and air cushion vehicles. Wosser authored some of the first technical papers on air cushion vehicles published in the United States beginning in 1958 when ACVs were in their infancy. Currently he is active in the administration of the several ACV projects conducted by Bell. Included are: the U. S. Navy's SKMR-1 Hydroskimmer and Bell/Westland SR.N5 air cushion vehicle test and mission suitability trials now going on at the U. S. Navy's Norfolk Va. base preparations for the first year-round ACV scheduled passenger service set to begin this summer in the San Francisco-Oakland area and two hydrokeel military amphibious assault projects. A native of Mill Valley Calif. Wosser became a Naval aviation cadet in 1943 after studying mechanical engineering at the University of California. During his 20 years as a Marine pilot Wosser accumulated 3600 hours of flight time including 350 combat hours. He holds a master of science degree in aeronautical engineering from Massachusetts Institute of Technology and bachelor of science degrees in military science and aeronautical engineering respectively from the University of Maryland and the U. S. Navy Postgraduate School.

来源：评论

学校读者我要写书评

暂无评论

TOMAHAWK NITROGEN PREssURIZATION MAINTENANCE - WHY

引用

NAVAL ENGINEERs JOURNAL 1993年第2期105卷 66-68页

作者： CIARULA, TA NERADKA, VF Cdr. Thomas A. Ciarula: USN was born in Pottstown Pa. He attended Northrop University in Inglewood Calif. where he earned a bachelor of science degree in aircraft maintenance engineering in September 1971. He was selected for Officer Candidate School where he was commissioned an ensign (Aeronautical Maintenance Duty) in August 1972. Cdr. Ciarula has been assigned to VA-37 The AIMD at NAF Kadena Okinawa Japan VXE-6 and the USS Forrestal. He was the wing maintenance for training officer for Air Wing Three at NAS Chase Field in Beeville Tex. and the AIMD officer at NAS Key West Fla. In 1988 Cdr. Ciarula was assigned to the Cruise Missiles Project (PEO-CU) where he was the TASM class desk officer and the director of logistics. While at the Cruise Missiles Project he was awarded his master of science in general administration from Central Michigan University. He is currently assigned to PMA-205 in the Naval Air Systems Command. Vincent F. Neradka:received B.S. and M.S. degrees from the University of Maryland in aerospace engineering in 1964 and 1969 and an MS in technical management from the Johns Hopkins University in 1986. He joined the Johns Hopkins University Applied Physics Laboratory in 1979 working on the Vertical Launching System of the Aegis cruisers. Since that time he has participated in activities on the Phalanx program the SPS-48E radar and long term involvement with the Cruise Missile Program. On the Cruise Missile Program Mr. Neradka has focused on the specification of and testing related to environments. Simulation activities have included modeling of pneumatic systems and NASTRAN dynamic modeling. Mr. Neradka is a registered professional engineer.

This paper discusses the data that were recorded during a three-month accelerated humidity test of two Tomahawk all-up rounds (AURs), one pressurized with dry nitrogen in accordance with the current practice, and the other left unpressurized. Temperature and humidity were recorded inside the canisters and missiles. Data analysis consisted of psychrometric calculations to determine the moisture intrusion into these missiles during the test. The work was carried out in support of a technical effort directed at changing the storage and stowage environmental protection of the Tomahawk missile.

关键词：

来源：评论

学校读者我要写书评

暂无评论

WARsHIPs AND COsT CONsTRAINTs

引用

NAVAL ENGINEERs JOURNAL 1986年第2期98卷 41-52页

作者： HOPE, JP sTORTZ, VE Jan Paul Hope a native of Northern Virginia received his bachelor of science degree in mechanical engineering from the University of Virginia in 1969. Upon graduation he began his career in the Department of the Navy with the Naval Ship Systems Command in the acquisition of patrol craft mine sweepers and submarine rescue ships. In January 1971 he transferred to the ship arrangements branch of the Naval Ship Engineering Center. He was selected for the long-term training program at George Washington University in 1974 and completed the program in February 1976 with the degree of master of engineering administration. While at the Naval Ship Engineering Center Mr. Hope was general arrangement task leader on the AO-177 CG-47 CSGN CSGN (VSTOL) CGN-9 (Aegis) and CGN-42 and he also assisted in the landmark Naval Sea Systems Command civilian professional community study. In 1978 he was selected as acting head of the damage control section and subsequently was selected as acting head of the surface ship hydrodynamic section. In February 1980 he was promoted to head of the surface combatant arrangements design section. Mr. Hope was selected for the first class of the NA VSEA commander's development program. While on the program he served in the DDGX combat systems engineering division and the DDGX project office of NA VSEA was the assistant director for ship design in the office of the Assistant Secretary of the Navy for shipbuilding and logistics and was the director of weight engineering and the director of systems engineering for the DDG-51 project in NA VSEA. Upon completion of the program Mr. Hope was assigned as the deputy director of the boiler engineering division to create a new division as a major fleet support initiative by NA VSEA. In June 1985 he joined the staff of the Assistant Secretary of the Navy for shipbuilding and logistics. Mr. Hope was presented the Department of the Navy meritorious civilian service medal in June 1983 for his service with the Office of the Assistant Secretary of the

This paper discusses the need and processes for designing warships to meet cost constraints and for managing warship acquisition programs during the design phase to assure effective adherence to production cost constraints by the design team. The resource control methodology used during the contract design of the Arleigh Burke class destroyer, DDG-51, is examined as a potential model for controlling the cost while maintaining the combat effectiveness of warships. The paper begins with a summary of the basic issue — the relationship among unit cost, unit capability, force level numbers, and force capability — showing recent trends in destroyer costs and force levels. This introduction also includes a discussion of the cost constraint for the DDG-51 in relation to historical trends and ship construction funding allocation. The resource control methodology used to reduce and control costs of the DDG-51 is discussed with a summary of the approach, key concepts and tools, chronology of key events, examples, and results achieved. A number of observations on this methodology are then made which are followed by comments on life cycle costs. The paper concludes with remarks on the future application of the resource control methodology and areas for further work to improve future resource control efforts.

关键词： WARsHIPs

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：