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The Secret Toxic Legacies of Chemical Warfare: Agent Blue Use during the 2nd Indochina and Vietnam Wars in Laos, Cambodia, and Vietnam (1961 to 1971)
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作者 Kenneth R. Olson 《Open Journal of Soil Science》 2024年第11期689-725,共37页
During the 2nd Indochina War which started in 1959, the United States Central Intelligence Agency (CIA), Air America, and the Air Force waged a secret and unconventional air war in Laos from Udorn Air Force base locat... During the 2nd Indochina War which started in 1959, the United States Central Intelligence Agency (CIA), Air America, and the Air Force waged a secret and unconventional air war in Laos from Udorn Air Force base located in Thailand and across the Mekong River from Vientiane, Laos. Starting in 1961, four years before the official start of the American-Vietnam War, Agent Blue, the arsenic-based herbicide used to kill rice and other food crops, was used extensively in Laos, Vietnam and to a lesser extent in Cambodia. During the secret 2nd Indochina War and the Vietnam Civil War the public knew little about the use of Agent Blue. After the official start of the American-Vietnam War in 1965, the United States media news reports, about chemical warfare were dominated by the story of Agent Orange and its devastating impacts. The public knew very little about the previous use of Agent Blue in both wars. The first known media pick up of the Agent Blue (arsenic based) and Agent Pink, Agent Green, and Agent Purple (all three contain 2, 4, 5-T and unknown amounts of dioxin TCDD) was in May of 1964. Jim G. Lucas, a Scripps-Howard staff reporter submitted an article that was published as an editorial in Washington Post on May 26, 1964. The next news reference to this chemical weapon was a Letter to the Editor published in the New York Times titled “Agent Blue” in Vietnam by Arthur H. Westing in (1971). The use of herbicides, including Agent Blue in Laos during the 2nd Indochina War, was kept a secret until 1982, when a draft of Buckingham’s study of Operation Ranch Hand was made public. Much about the U.S. war effort in Laos is still classified. In a 2014 issue of the VVA Veteran magazine, Loana Hoylman published an article on “Today’s Blue Arsenic in the Environment”. The first refereed journal article on this topic, “The Fate of Agent Blue, the Arsenic-Based Herbicide, Used in South Vietnam during the Vietnam War” was published in 2020 in the Open Journal of Soil Science by Kenneth R. Olson and Larry Cihacek. In 2021 the Asia Times (print) and VietnamVeteranNews (radio podcast) picked up the Agent Blue story. During the early 2020s, Olson published six additional refereed journal articles on Agent Blue, cacodylic acid, and arsenic. The primary objective is to determine why no major news organization in the United States, including the New York Times and Washington Post, have never investigated Agent Blue use during the 2nd Indochina and Vietnam wars? Why did the use of Agent Blue story, used to destroy Laotian and South Vietnamese civilian food (rice) sources and production sites, received only very limited coverage by US print media news organizations during the last 64 years? 展开更多
关键词 Laos VIETNAM 2nd Indochina War Vietnam War agent blue Arsenic Cacodylic Acid
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Agent Blue Spraying in the Mekong Delta during the Vietnam War: Fate of the Arsenic Based Herbicide Weapon Used to Destroy Rice Crop and Mangrove Forests 被引量:1
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作者 Kenneth R. Olson Larry Cihacek 《Open Journal of Soil Science》 CAS 2022年第7期253-294,共42页
Agent Blue, a mixture of cacodylic acid (CH<sub>3</sub>) As O<sub>2</sub>H) and sodium cacodylate (C<sub>2</sub>H<sub>6</sub> AsNaO<sub>2</sub>), was a tacti... Agent Blue, a mixture of cacodylic acid (CH<sub>3</sub>) As O<sub>2</sub>H) and sodium cacodylate (C<sub>2</sub>H<sub>6</sub> AsNaO<sub>2</sub>), was a tactical arsenic-based herbicide used during the Vietnam War to destroy grasses and rice crops. Natural and synthetic sources of arsenic can degrade into water-soluble forms and persist in groundwater and potentially contribute to elevating As levels in drinking water. The United States Department of Defense (DOD) and United States Department of Agricultural (USDA) Operation Ranch Hand records for tactical herbicides including Agent Blue sprayed in southern Vietnam during the Vietnam War (1961-1971) are very detailed, rather complete and publicly available. The same is not true for tactical herbicides sprayed by the Republic of Vietnam (RV) during the Khai Quang program which was supported by the U.S. Army, U.S. Navy and Central Intelligence Agency (CIA) in the Mekong Delta. Agent Blue was sprayed by the RV military for three years before the official start of the American-Vietnam War. Few, if any, RV military, US Army, US Navy and CIA spray records exist from 1962 to 1965. Vietnam War veterans, historians and scholars have reported the spraying of 3.2 million liters (468,008 kg As) of Agent Blue on rice paddies and mangrove forests in the Mekong Delta and Central Highlands by the RV military with the support of the US Army, US Navy and CIA. The Institute of Medicine estimated that 3.2 million liters (468,000 kg As) were sprayed during the RV Khai Quang program. This was in addition to the U.S. Air Force’s Operation Ranch Hand spraying of the tactical herbicide Agent Blue primarily by C-123 aircraft. The Operation Ranch Hand missions maintained location and quantities of herbicides sprayed (over 4,712,000 liters (664,392 kg As) from 1961-1971. The RV military and US military (Army and Navy) spray equipment included hand and backpack sprayers, sprayers mounted on Brown Water Navy boats, on Army track vehicles and Army land-based helicopters and helicopters based on the decks of Blue Water Navy ships. Some of these spray missions were a military secret and spray records were classified or if kept were not maintained. Agent Blue containing cacodylic acid had a short half-life and degraded to water-soluble arsenic, which was released into the surface water and/or leached into the groundwater. Once the water-soluble arsenic leached into the Vietnam Mekong Delta groundwater, the arsenic-rich water was pumped back to the surface by tens of thousands of tube wells for urban and agricultural use. The primary objectives of this research are to explore the conditions during the Vietnam War under which 1) the RV military herbicide spray program with the support of the US Navy, CIA and US Army, and 2) the US Air Force spray program during Operation Ranch Hand may have significantly contributed to the natural and anthropic As spikes found in the Mekong Delta today. The environmental impacts of Agent Blue, on the Menominee River at manufacturing sites in the United States, were studied to identify possible As remediation and mitigation strategies. The lessons previously learned at the manufacturing sites in Wisconsin and Michigan, United States can be considered and applied to the Mekong Delta to help mitigate and remediate the arsenic-rich surface water, soil, sediment and groundwater found in the Mekong Delta. 展开更多
关键词 Operation Ranch Hand Khai Quang program agent blue ARSENIC Cacodylic Acid North Vietnam Army Republic of Vietnam Democratic Republic of Vietnam American-Vietnam War
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Use of Agent Purple, Agent Orange and Agent Blue on Royal Thai Air Force Base Perimeters in Thailand during the Vietnam War
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作者 Kenneth R. Olson Larry Cihacek 《Open Journal of Soil Science》 CAS 2023年第5期243-271,共29页
Seven Royal Thai Air Force bases in Thailand were used by the United States Air Force (USAF) during the Vietnam War as staging hubs for operations in Laos and Cambodia. Five bases in Thailand, including Nakhon Phanom ... Seven Royal Thai Air Force bases in Thailand were used by the United States Air Force (USAF) during the Vietnam War as staging hubs for operations in Laos and Cambodia. Five bases in Thailand, including Nakhon Phanom (NKP), Ubon, Korat, U-Tapao and Udorn endured sniper fire interdiction, perimeter penetration, and sapper (combat engineer) attacks. Nam Phong, an eighth Royal Thai Air Force base was used by the United States Marine Corps air operations starting in 1972. US Military personnel stationed throughout Thailand were also attacked by Communists insurgents. Two herbicides, Agent Purple and Agent Orange containing 2, 4, 5-T contaminated with dioxin (TCDD—2, 3, 7, 8 tetrachlorodibenzodioxin) and a third herbicide, the arsenic-based Agent Blue, were routinely received at these Thailand airbases in support of air missions and to keep airbases and perimeter fences clear of vegetation. Udorn Royal Thai Air Force (RTAF) base, established in the 1950s was consistently a target of enemy attacks during this period. The Thai government allowed the United States to use five bases, covertly, and two other Thai bases, openly, due to concerns that the civil war inside Laos might spread into Thailand. The US Air Force began, in 1961, to provide the air defense of Thailand and to fly reconnaissance flights over Laos. Under the United States and Thailand’s “gentleman’s agreement”, the bases used by the USAF were considered RTAF bases under the command of Thai officers. The USAF at Udorn was under the command of the United States Pacific Air Forces (PACAF) Thirteenth Air Force and was used to temporarily store and distribute Agent Purple, Agent Orange and Agent Blue to Laos’s airfields for spraying of the Ho Chi Minh Trail. Thai air police controlled access to the bases using sentry dogs, observation towers, and machine gun emplacements. The USAF Security police assisted the Thai air police in base defense. In this study, we document the use of Agent Orange, Agent Purple and Agent Blue on Royal Thai Air Force base perimeters and grounds during the Vietnam War, potential active-duty service personnel exposure to these toxic herbicides and health impacts of the contaminant dioxin TCDD and arsenic on U.S. Vietnam Era Veterans and Vietnam Veterans. This documentation is important evidence in the “assumption of exposure” for health claims to the US Veterans Administration (VA) by veterans that served in Thailand between 1962 and 1976. 展开更多
关键词 agent blue agent Orange agent Purple Thailand DIOXIN Arsenic
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Agent Blue: A Secret Military and Environmental Chemical Weapon Used for Food Denial in South Vietnam during the Vietnam Civil War (1962-1965)
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作者 Kenneth R. Olson 《Open Journal of Soil Science》 2023年第3期151-186,共21页
During the last 60 years, the southern Vietnam environment and Vietnamese living in the Mekong Delta have bio-accumulated arsenic from natural and anthropic (Vietnam Civil War (1962-1965)) sources via their drinking w... During the last 60 years, the southern Vietnam environment and Vietnamese living in the Mekong Delta have bio-accumulated arsenic from natural and anthropic (Vietnam Civil War (1962-1965)) sources via their drinking water (groundwater from tube wells) and food supply leading to an increasing risk of chronic poisoning over time. A synthesis and analysis of publications and records is presented to document the Republic of Vietnam (RV), the official name of the South Vietnam Government, and United States (US) militaries contribution to arsenic levels and toxic spikes in the Vietnam Mekong Delta groundwater. During the Vietnam Civil War, Agent Blue, in powder form, was shipped to Port Saigon, via the Saigon River, and transported to the Tan Son Nhut Air Force base during the Vietnam Civil War. After the official start of the American-Vietnam War (1965-1973) the tactical herbicides were re-routed to Bien Hoa Air Force base (1965 to 1971). Approximately 3.2 million liters of Agent Blue (468,008 kg As) was sprayed or dumped by the RV military with the assistance and support of the Central Intelligence (CIA), US Army and US Navy, during the 1962-1965 Khai Huang (Hamlet) Program. A portion of an additional 4.6 million liters of Agent Blue (664,392 kg of As) was sprayed between 1962 and 1965 by the US Air Force as part of Operation Ranch Hand and prior to the official start of the American-Vietnam War in August 1964. Operation Rand Hand began in 1962 and ended in 1971. The Institute of Medicine estimated a total of 7.8 million liters (1,132,400 kg As) of Agent Blue was applied to southern Vietnam landscape from 1962 to 1971. This total includes both the 1962 to 1965 RV Khai Huang program with the assistance of the CIA, US Army and US Navy, and the total Agent Blue applied by US Air Force Operation Ranch Hand from 1962 to 1971. The primary objective of this study was to document how Agent Blue, the arsenic-based herbicide, became a secret US military and environmental chemical weapon used by the RV and US militaries in southern Vietnam during the Vietnam Civil War years (1962-1965). This assessment found that the anthropic arsenic, including Agent Blue, added a toxic burden to the Mekong Delta soils, surface water, groundwater, drinking water, food supply, and human health. However, there are missing details regarding political decisions and a full accounting of the geographic locations sprayed and amount of Agent Blue used. Vietnam War Archives have paper correspondence and RV herbicide spray records that shed greater light on this period. These records are over 50 years old and need to be electronically scanned, stored, and made available for additional historical analyses. 展开更多
关键词 Arsenic Cacodylic Acid agent blue Herbicides Chemical Weapons Fort Detrick Department of Defense (DOD) President Kennedy President Diem CIA US State Department USDA Khai Huang
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基于移动AGENT的敏捷车间调度控制系统建模 被引量:1
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作者 王太江 王时龙 龙雪峰 《机电一体化》 2004年第2期26-29,共4页
该文针对job—shop型车间的生产调度控制,提出了一种新的车间分布式动态控制系统。该系统利用多代理技术,把工件和制造设备等映射为一个个的代理;应用蓝牙无线通信技术和嵌入式微控制器技术研制成智能芯片,安装在工件和设备上,实现通信... 该文针对job—shop型车间的生产调度控制,提出了一种新的车间分布式动态控制系统。该系统利用多代理技术,把工件和制造设备等映射为一个个的代理;应用蓝牙无线通信技术和嵌入式微控制器技术研制成智能芯片,安装在工件和设备上,实现通信和智能代理功能;应用多代理技术实现车间分布式智能控制网络,达到车间系统的信息集成和分布式控制;应用遗传算法进行管理代理的快速决策。实践证明,本系统对于车间任务的动态变化和部分设备故障状态变化具有很好的适应能力。 展开更多
关键词 分布式控制 智能agent 车间调度 遗传算法 蓝牙技术 敏捷制造
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应用AlamarBlue和MTT法测定抗结核药物最低抑菌浓度的研究
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作者 陆字 王彬 +2 位作者 郑梅琴 赵伟杰 李芃 《结核病与胸部肿瘤》 2007年第4期251-254,共4页
目的建立并评价微孔板AlamarBlue和MTT分析法用于抗结核分枝杆菌药物最低抑菌浓度(MlC)的测定。方法应用AlamarB1ue和MTr显色法将12种抗结核药物对结核分枝杆菌H37Rv‰的最低抑菌浓度分别进行测定,并与传统的试管二倍稀释法进行比较... 目的建立并评价微孔板AlamarBlue和MTT分析法用于抗结核分枝杆菌药物最低抑菌浓度(MlC)的测定。方法应用AlamarB1ue和MTr显色法将12种抗结核药物对结核分枝杆菌H37Rv‰的最低抑菌浓度分别进行测定,并与传统的试管二倍稀释法进行比较。结果AlamarBlue和MTr试验分别在6天和8天报告结果,Alamarblue法与试管法相比较,完全符合率是91.7%(11/12):MTT法与试管法相比较完全符合率是75%(9/12),具有较好的一致性。结论AlamarBlue和MTT方法测定药物对结核分枝杆菌的MIC具有快速、操作简便等特点,适用于新抗结核化合物的大量快速筛选。 展开更多
关键词 分枝杆菌 结核 Alamar blue MTT 最低抑菌浓度 抗结核药
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马尾松木材防霉防蓝变研究进展
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作者 戚冰倩 杨明伟 +3 位作者 马轩 李利芬 吴志刚 余丽萍 《林产工业》 北大核心 2024年第10期30-35,共6页
马尾松(Pinus massoniana Lamb.)是我国南方分布最广,最主要的用材树种之一,生长速度快、适应能力强、木材力学性能好,被广泛应用于建筑、造纸、装饰、家具、交通等行业。然而,由于其内部含有许多营养物质,易受到霉菌和蓝变菌的侵害。... 马尾松(Pinus massoniana Lamb.)是我国南方分布最广,最主要的用材树种之一,生长速度快、适应能力强、木材力学性能好,被广泛应用于建筑、造纸、装饰、家具、交通等行业。然而,由于其内部含有许多营养物质,易受到霉菌和蓝变菌的侵害。本文重点对国内外传统和新型的马尾松木材防霉防蓝变药剂和处理方法进行了阐述,同时对存在的问题进行了分析,并对研究方向进行了展望,旨在为今后开发新型防霉防蓝变药剂和方法提供理论支持。 展开更多
关键词 马尾松木材 霉菌和蓝变菌 抗真菌活性 防霉剂 防蓝变技术
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硫转移剂应用与改善催化裂化烟气蓝烟拖尾情况总结
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作者 穆林波 房兴 +7 位作者 朱凯 沈兴 苏宇 孙俊 姜成 孟祥坤 张连勇 宋海涛 《炼油技术与工程》 CAS 2024年第4期44-48,共5页
中国石油天然气股份有限公司兰州石化分公司1.2 Mt/a重油催化裂化装置因原料性质变化导致再生烟气中SO_(x)含量上升,外排烟气蓝烟拖尾现象愈发严重。为改善烟羽外观、避免外排废水TDS(溶解性固体总量)超标并降低湿法脱硫塔操作负荷,开... 中国石油天然气股份有限公司兰州石化分公司1.2 Mt/a重油催化裂化装置因原料性质变化导致再生烟气中SO_(x)含量上升,外排烟气蓝烟拖尾现象愈发严重。为改善烟羽外观、避免外排废水TDS(溶解性固体总量)超标并降低湿法脱硫塔操作负荷,开展了运用增强型RFS09硫转移剂并优化装置操作、消除外排烟气蓝烟拖尾的工业试验。结果表明:当原料硫质量分数为0.4%~0.7%、硫转移剂藏量占系统藏量的3.5%时,蓝烟拖尾现象得以控制,脱硫塔入口烟气SO_(2)的质量浓度稳定控制在500 mg/m^(3)以下、碱液消耗量降低48.5%、外排废水TDS由41400 mg/L降至6400 mg/L,废水COD(化学需氧量)减小,烟气中的硫大幅向气体产品中转移。增强型RFS09硫转移剂的应用对产物分布、产品性质和装置运行均无负面影响。该工业试验也进一步表明:增强型RFS09硫转移剂能很好地实现催化裂化再生烟气污染物源头减排,并减少二次污染。 展开更多
关键词 硫转移剂 RFS09 催化裂化烟气 蓝烟拖尾 SO_(3) 碱液消耗 TDS COD
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普鲁士蓝类钠离子正极材料的制备及改性研究进展
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作者 杨志豪 李昌明 +2 位作者 吴智谋 钟华 谈灵操 《材料研究与应用》 CAS 2024年第2期195-206,共12页
普鲁士蓝类似物(PBAs)具有较高理论比容量和开放式三维框架结构,被认为是最具应用前景的钠离子正极材料之一。然而,大部分通过水溶液反应合成的PBAs,普遍存在[Fe(CN)_(6)]_(3)-/[Fe(CN)_(6)]^(4-)空位,水分子不可避免进入PBAs框架中形... 普鲁士蓝类似物(PBAs)具有较高理论比容量和开放式三维框架结构,被认为是最具应用前景的钠离子正极材料之一。然而,大部分通过水溶液反应合成的PBAs,普遍存在[Fe(CN)_(6)]_(3)-/[Fe(CN)_(6)]^(4-)空位,水分子不可避免进入PBAs框架中形成配位水,占据了原本Na+的容纳点位,影响了Na+的正常传输,降低了PBAs材料的比容量。PBAs晶体框架受空位影响,其离子导电性和循环稳定性在长时间循环下退化并变差,同时配位水与电解液发生副反应,进一步降低了电池的电化学性能。为解决上述问题,提高钠离子电池中PBAs基正极的比容量、循环稳定性、倍率性能和整体能量密度,重点介绍了PBAs正极材料的制备及改性方法,并总结了各制备及改性方法的特点及效果。PBAs的制备方法包括水热法、共沉淀法和单一铁源自分解法。改性方法包括制备工艺优化和材料复合改性,其中制备工艺优化包括螯合剂、脱水、提高前驱液Na+浓度和结构纳米化,材料复合改性包括元素掺杂、表面涂层、异质结构和复合材料。研究表明,在富含Na+的前驱液中,采用螯合剂辅助共沉淀法,通过合成过程的水浴加热及样品制备后的真空干燥,可获得空位少、水分少的高结晶度PBAs。将制备的PBAs样品与导电剂进行复合,可进一步改善其电子导电率及倍率性能,有望获得高容量、高循环特性及满足高倍率需求的正极材料。综上所述,PBAs作为钠离子正极材料,可通过对其合成方法和改性研究的不断创新,进一步优化其电化学性能,使其在未来具有广阔的应用前景。 展开更多
关键词 钠离子电池 普鲁士蓝类似物 正极材料 制备工艺 材料改性 电化学性能 螯合剂 研究进展
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Review and Analysis: Evaluation of the Impacts and Consequences of Using Agricultural Herbicides as Military Chemical Weapons in Second Indochina War
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作者 David R. Speidel Kenneth R. Olson 《Open Journal of Soil Science》 2024年第8期471-498,共28页
The legacy of the human misery caused by the application of the herbicides including Agent Purple and Agent Orange contaminated with unknown amounts of dioxin TCDD and Agent Blue, the arsenic-based herbicide, sprayed ... The legacy of the human misery caused by the application of the herbicides including Agent Purple and Agent Orange contaminated with unknown amounts of dioxin TCDD and Agent Blue, the arsenic-based herbicide, sprayed over the jungles, rice fields, and hamlets of Vietnam is still haunting us today. Why did this happen? Could it have been prevented? Was it necessary United States military strategy? Was it an intentional decision to inflict this blight on the enemy soldiers and the Vietnamese, Cambodian, and Laotian civilians, to poison their land and cause generations of harm? Alternatively, was it an unpreventable accident in the march of military history? What patterns in the U.S. government’s thought process could be identified as the cause, which led to the decision to use these herbicides as tactical chemical weapons? If the introduction of herbicide (chemical) weapons had not been made, would the outcome of the Vietnam War and the Secret Wars in Laos and Cambodia have been any different? The objective of this treatise is to outline the role of world events and backgrounds and the role of the leaders, U.S. military, CIA, USDA, U.S. State Department, the U.S. President appointed Ambassadors to Vietnam and Laos, chemical companies, and President Diệm’s Republic of Vietnam (RVN) government and military. Their collective advice led to the decision to use herbicides as military and environmental chemical weapons in the Second Indochina War. Were the National interests achieved by U.S. military strategy in the RVN using herbicide weapons worth the long-term environmental and human health consequences in Vietnam, Cambodia, and Laos? Did it impact the outcome of the Second Indochina War? 展开更多
关键词 Second Indochina War Cambodia Laos South Vietnam Vietnam War Tactical Herbicides agent blue agent Orange agent Purple Dioxin TCDD Arsenic
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巯基化多孔二氧化硅的制备及其亚甲基蓝吸附性能
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作者 周泽楠 戴昆浩 +2 位作者 李坤泉 陈慧如 吴文剑 《合成材料老化与应用》 CAS 2024年第4期15-17,107,共4页
以氨水为催化剂,正硅酸四乙酯(TEOS)为前驱体,十六烷基三甲基溴化铵(CTAB)为致孔剂,采用溶胶-凝胶法制备多孔二氧化硅,并使用γ-巯丙基三甲氧基硅烷(KH590)对其进行改性,对改性前后的多孔二氧化硅进行表征和亚甲基蓝吸附性能测试。结果... 以氨水为催化剂,正硅酸四乙酯(TEOS)为前驱体,十六烷基三甲基溴化铵(CTAB)为致孔剂,采用溶胶-凝胶法制备多孔二氧化硅,并使用γ-巯丙基三甲氧基硅烷(KH590)对其进行改性,对改性前后的多孔二氧化硅进行表征和亚甲基蓝吸附性能测试。结果表明,所制备的多孔二氧化硅粒径均在40~80 nm,孔径在2.25~4.39 nm之间,具有较大的比表面积,最大为379.4m^(2)/g,且分散性良好。红外光谱分析表明KH590成功对多孔二氧化硅进行了改性,改性后的多孔二氧化硅疏水性能提高。相较于未改性的多孔二氧化硅,KH590改性后的多孔二氧化硅对亚甲基蓝的吸附性能更好。 展开更多
关键词 溶胶-凝胶 正硅酸四乙酯 多孔二氧化硅 硅烷偶联剂 亚甲基蓝吸附
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不同填充剂及复合微生物菌剂对蓝藻堆肥效果的影响 被引量:17
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作者 王利娟 谢利娟 +2 位作者 杨桂军 严群 阮文权 《环境工程学报》 CAS CSCD 北大核心 2009年第12期2261-2265,共5页
为了研究不同填充剂以及复合微生物菌剂对蓝藻堆肥效果的影响,本实验利用锯末、稻壳、麸皮和米糠为填充剂接种堆肥菌剂与蓝藻进行室内模拟堆肥,设置了稻壳、麸皮为填充剂不加菌剂作对照组,分析了pH值、总碳(TC)、总氮(TN)、碳氮比(C/N)... 为了研究不同填充剂以及复合微生物菌剂对蓝藻堆肥效果的影响,本实验利用锯末、稻壳、麸皮和米糠为填充剂接种堆肥菌剂与蓝藻进行室内模拟堆肥,设置了稻壳、麸皮为填充剂不加菌剂作对照组,分析了pH值、总碳(TC)、总氮(TN)、碳氮比(C/N)、种子发芽指数(germination index,GI)的动态变化。堆肥结束时处理组麸皮的TC降低了90.43 g/kg,TN增加了1.85 g/kg,C/N降低到13.46,GI升高到73.98%,这都说明麸皮作为填充剂混合蓝藻堆肥的效果较好;添加复合微生物菌剂后,处理组稻壳(60.98%)、处理组麸皮(73.67%)的GI分别比相应的对照组升高了11.02、19.84个百分点,这说明复合微生物菌剂对蓝藻堆肥有促进作用。 展开更多
关键词 蓝藻 堆肥 填充剂
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含有金刚烷胺的多金属氧酸盐的合成和抗流感病毒活性 被引量:17
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作者 刘术侠 王春玲 +2 位作者 于淼 李玉新 王恩波 《化学学报》 SCIE CAS CSCD 北大核心 2005年第12期1069-1074,i002,共7页
以金刚烷胺和1∶10(Ln∶W),1∶13(Ni或Mn∶V)系列多金属氧酸盐为原料,合成了化学式分别为K4(C10H18N)5CeW10O36·2H2O(APOM-5),K4(C10H18N)5PrW10O36·2H2O(APOM-6),K3(C10H18N)4NiV13O38·H2O(APOM-12)和K3(C10H18N)4MnV13... 以金刚烷胺和1∶10(Ln∶W),1∶13(Ni或Mn∶V)系列多金属氧酸盐为原料,合成了化学式分别为K4(C10H18N)5CeW10O36·2H2O(APOM-5),K4(C10H18N)5PrW10O36·2H2O(APOM-6),K3(C10H18N)4NiV13O38·H2O(APOM-12)和K3(C10H18N)4MnV13O38·H2O(APOM-13)的四种新的多金属氧酸盐,并通过元素分析、IR光谱及1HNMR谱对其结构进行了表征.在狗肾(Madin-Darbycaninekidney,MDCK)细胞内,对合成化合物进行了抗流感病毒A和B的活性研究.发现APOM-13对流感病毒A,B两型均有明显的抑制活性,而APOM-12只在浓度较高时对流感病毒A,B两型有抑制活性,低浓度时,活性不明显.APOM-5,6对A型流感病毒有效,但对B型流感病毒抑制活性不明显.另外发现APOM-12和APOM-13对流感病毒感染MDCK细胞病变效应(CPE)具有明显抑制作用,且浓度越大抑制作用愈明显. 展开更多
关键词 多金属氧酸盐 金刚烷胺 抗流感病毒 抑制活性 A型流感病毒 细胞病变效应 抑制作用 HNMR谱 合成化合物 病毒A 元素分析 IR光谱 活性研究 病毒感染 化学式 细胞内 低浓度
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内镜下注射聚桂醇和美兰混合液在食管静脉曲张硬化治疗术中的应用 被引量:13
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作者 牟海军 徐靖宇 +3 位作者 庹必光 高原 杨媛 周小琳 《中国内镜杂志》 2018年第3期1-5,共5页
目的分析内镜下注射聚桂醇和美兰混合液在食管静脉曲张硬化治疗术中的应用价值。方法收集2014年6月-2016年2月于该院接受内镜下治疗的62例食管静脉曲张患者的临床资料,其中26例接受内镜下注射聚桂醇治疗(A组),36例接受内镜下注射聚桂醇... 目的分析内镜下注射聚桂醇和美兰混合液在食管静脉曲张硬化治疗术中的应用价值。方法收集2014年6月-2016年2月于该院接受内镜下治疗的62例食管静脉曲张患者的临床资料,其中26例接受内镜下注射聚桂醇治疗(A组),36例接受内镜下注射聚桂醇+美兰混合液治疗(B组),比较两组治疗效果、止血成功率、安全性、并发症及随访复发情况。结果 (1)B组治疗总有效率、急诊止血成功率略高于A组,但对比差异无统计学意义(P>0.05);(2)B组食管静脉曲张清除所需治疗次数少于A组,治疗时间短于A组,差异有统计学意义(P<0.05);(3)B组远期再出血率及总出血率均低于A组,差异有统计学意义(P<0.05);(4)B组术后并发症发生率及随访复发率均低于A组,差异有统计学意义(P<0.05)。结论内镜下注射聚桂醇和美兰混合液在食管静脉曲张硬化治疗术中疗效肯定,止血效果好,患者术后并发症发生率低,复发率低。 展开更多
关键词 食管静脉曲张 聚桂醇+美兰混合液 硬化剂 内镜
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液相法制备钴蓝颜料的性能及动力学研究 被引量:7
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作者 谭俊茹 韩云芳 +2 位作者 侯文祥 陈秀增 付贤松 《硅酸盐学报》 EI CAS CSCD 北大核心 2001年第6期541-545,共5页
研究了液相法制备钴蓝所用沉淀剂 ,探讨了主要工艺参数诸如CoO与Al2 O3 的摩尔比 ,阴离子SO2 - 4 的引入及浓度、煅烧温度等与钴蓝光学性能、粒径、形貌以及晶型转化的关系 .实验结果表明液相法制备钴蓝不仅较常规固相法煅烧温度低 2 0 ... 研究了液相法制备钴蓝所用沉淀剂 ,探讨了主要工艺参数诸如CoO与Al2 O3 的摩尔比 ,阴离子SO2 - 4 的引入及浓度、煅烧温度等与钴蓝光学性能、粒径、形貌以及晶型转化的关系 .实验结果表明液相法制备钴蓝不仅较常规固相法煅烧温度低 2 0 0℃左右 ,颜料色泽鲜艳 ,而且颜料不用粉碎就很松散 ,粒径均匀 ,性能优异 ,具有尖晶石结构 .通过热重分析研究了由钴蓝前驱体到钴蓝热分解过程的反应动力学 ,提出了反应动力学模型 . 展开更多
关键词 液相法 沉淀剂 热分解 动力学模型 钴蓝颜料
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化学发光法检测空气中NO_2研究 被引量:10
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作者 吴婉娥 杜勇 +1 位作者 王天生 张会坛 《环境科学与技术》 CAS CSCD 北大核心 2009年第10期133-136,共4页
以0.2%的三乙醇胺水溶液作为二氧化氮吸收液,将空气中二氧化氮转化为亚硝酸盐,进而测出空气中二氧化氮的浓度。通过实验发现,进样方式、载流速度、硫酸浓度、溴酸钾浓度和酸性铬蓝K的浓度对该体系的发光强度都有影响,确定了体系的最优条... 以0.2%的三乙醇胺水溶液作为二氧化氮吸收液,将空气中二氧化氮转化为亚硝酸盐,进而测出空气中二氧化氮的浓度。通过实验发现,进样方式、载流速度、硫酸浓度、溴酸钾浓度和酸性铬蓝K的浓度对该体系的发光强度都有影响,确定了体系的最优条件,建立了标准曲线,亚硝酸根的浓度在6.0×10-9~1.0×10-5mol/L范围内分段有很好的线性关系,检出限为8.5×10-11mol/L。对1.0×10-8mol/L和1.0×10-6mol/L的亚硝酸根进行11次平行测定,相对标准偏差分别为1.8%和2.2%。用该方法对氧化剂实验室空气中的二氧化氮含量进行了检测并进行标准加入和回收实验,回收率在95%~104%之间,该法可用于大气环境中的NO2测定。 展开更多
关键词 化学发光法 溴酸钾-酸性铬蓝K NO2气体 氧化剂实验室
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复配型防霉剂在皮革中的应用 被引量:12
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作者 辜海彬 李岩 +2 位作者 陈武勇 赵长青 陈玲 《中国皮革》 CAS 北大核心 2006年第1期36-39,共4页
将5种防霉剂,即富马酸二甲酯(B)、尼泊金丙酯(C)、肉桂酸(D)、异噻唑啉酮(E)和肉桂酸酯类衍生物(A)及8种它们的复配组分(A∶E=10∶7、A∶E=5∶10、B∶E=10∶8、B∶E=5∶10、C∶E=10∶6、C∶E=6∶10、(E+B)∶A=10∶5(其中E∶B=5∶5)和(E... 将5种防霉剂,即富马酸二甲酯(B)、尼泊金丙酯(C)、肉桂酸(D)、异噻唑啉酮(E)和肉桂酸酯类衍生物(A)及8种它们的复配组分(A∶E=10∶7、A∶E=5∶10、B∶E=10∶8、B∶E=5∶10、C∶E=10∶6、C∶E=6∶10、(E+B)∶A=10∶5(其中E∶B=5∶5)和(E+C)∶A=10∶5(其中E∶C=5∶5))用于蓝湿革和成品革的防霉处理,并用抑菌圈法测定了经防霉处理的皮革的防霉性能。结果表明:E的防霉性能明显好于A、B、C、D,能单独用于蓝湿革和成品革的防霉;而A、B、C、D都不适合单独用于蓝湿革的防霉。8种复配型防霉剂对蓝湿革和成品革的防霉性能,都比单独的A、B、C、D好,与E的防霉性能接近,能够用于蓝湿革和成品革的防霉。 展开更多
关键词 皮革 防霉剂 复配 蓝湿革 成品革 抑菌圈
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亚甲蓝/光化学法体外灭活RNA包膜病毒的实验研究 被引量:6
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作者 黄庆 府伟灵 +4 位作者 陈斌 陈鸣 黄君富 徐迪雄 李维 《中华医院感染学杂志》 CAS CSCD 2004年第1期54-59,共6页
目的 研究亚甲蓝 (MB) /光化学法灭活 RNA包膜病毒的动力力参数条件。方法 以日本脑炎病毒为指示病毒 ,以与 MB最大吸收波长相匹配的单波长点阵式发光二极管为光源 ,将指示病毒与不同浓度的 MB工作液混合后 ,收集不同光照时间和距离的... 目的 研究亚甲蓝 (MB) /光化学法灭活 RNA包膜病毒的动力力参数条件。方法 以日本脑炎病毒为指示病毒 ,以与 MB最大吸收波长相匹配的单波长点阵式发光二极管为光源 ,将指示病毒与不同浓度的 MB工作液混合后 ,收集不同光照时间和距离的 MB/病毒混合液 ,将其接种于 Vero单层细胞后 ,空班法测定病毒滴度。结果 当光源光照度一定时 ,MB工作浓度、光源光照时间和距离是影响 MB/光化学法灭活病毒的主要动力学参数 ,1.0μg/ m l的 MB工作浓度可在理想的时间内 (≤ 5 m in)完全杀灭一定光照距离范围内 (≤ 2 .5 m )的病毒 ,同时 ,适当地延长光照时间 (≥ 2 5 m in) ,可完全杀灭更远光照距离的病毒 (≤ 3.0 m )。结论  MB/光化学法可在体外安全高效地杀灭 RNA包膜病毒 ;在光源光照度一定的条件下 ,MB工作浓度、光源光照时间和距离均可影响MB/光化学法灭活病毒的作用效果。 展开更多
关键词 MB/光化学法 光敏剂 光动力学 病毒灭活 RNA包膜病毒
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改性纳米二氧化硅的制备及其对亚甲基蓝的吸附性能 被引量:11
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作者 姚培 李树白 +2 位作者 刘媛 张启蒙 刘春晓 《化学研究与应用》 CAS CSCD 北大核心 2018年第2期297-302,共6页
以溶胶凝胶、原位修饰法制备偶联剂KH550表面修饰纳米二氧化硅作为新型吸附剂,对吸附剂进行FTIR、SEM、TG等分析表征。探讨了新型吸附剂对阳离子染料亚甲基蓝模拟废水进行吸附处理,研究了pH、离子强度、温度对亚甲基蓝吸附性能的影响及... 以溶胶凝胶、原位修饰法制备偶联剂KH550表面修饰纳米二氧化硅作为新型吸附剂,对吸附剂进行FTIR、SEM、TG等分析表征。探讨了新型吸附剂对阳离子染料亚甲基蓝模拟废水进行吸附处理,研究了pH、离子强度、温度对亚甲基蓝吸附性能的影响及吸附机理。改性纳米二氧化硅吸附染料的p H应用范围较宽。NaCl浓度对染料吸附有较大的影响,浓度增大,亚甲基蓝吸附容量增大。温度升高,亚甲基蓝吸附容量因脱附有所下降。改性纳米二氧化硅吸附亚甲基蓝符合Langmuir吸附模型,最大吸附容量为17.7mg·g^(-1),为优惠吸附。改性纳米二氧化硅经五次再生后,可重复利用吸附亚甲基蓝,吸附量基本不变。 展开更多
关键词 溶胶凝胶法 原位修饰法 纳米二氧化硅 偶联剂 亚甲基蓝 吸附
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市售补钙制剂钙含量的测定 被引量:4
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作者 王改珍 李国栋 +3 位作者 贺进田 王海峰 李志强 邓晓丽 《河北科技大学学报》 CAS 2002年第4期21-24,共4页
鉴于目前许多补钙制剂尚未收入国家药典,国家尚未提出测定补钙制剂中钙含量的统一方法,研究了以酸性铬蓝K为显色剂,在pH值为10.5的四硼酸钠缓冲溶液中与Ca2+络合,用分光光度法测定多种市售补钙制剂的钙含量;研究了钙-酸性铬蓝K络合物的... 鉴于目前许多补钙制剂尚未收入国家药典,国家尚未提出测定补钙制剂中钙含量的统一方法,研究了以酸性铬蓝K为显色剂,在pH值为10.5的四硼酸钠缓冲溶液中与Ca2+络合,用分光光度法测定多种市售补钙制剂的钙含量;研究了钙-酸性铬蓝K络合物的最佳形成条件:λ=498nm,pH=10.5,显色剂用量为2mL,缓冲溶液用量为0.5mL,钙浓度在0~2.4×10-5mol/L范围内遵循朗伯-比尔定律,相对标准偏差为1.2%。 展开更多
关键词 补钙制剂 钙含量 分光光度法 酸性铬蓝K 定量分析 含量测定 显色剂
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