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Fabrication of Cellulose Based Reinforced Linear Low Density Polyethylene with Polyethylene Terephthalate Composite: Effect of Acacia catechu as Coupling Agent

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Materials Sciences and Applications 2015年第11期6卷 995-1007页

作者： Lily R. Das Mohammad Zahirul I. Mollah Jahid M. M. Islam Shireen Akhter Farid Ahmed Mubarak Ahmad Khan Institute of Radiation and Polymer Technology Atomic Energy Research Establishment Bangladesh Atomic Energy Commission Dhaka Bangladesh Department of Physics Jahangirnagar University Savar Bangladesh Material Science Division Atomic Energy Centre Bangladesh Atomic Energy Commission Dhaka Bangladesh

Biodegradable reinforced composites are playing a vital role in the variety of application for their outstanding performance. Linear Low Density Polyethylene (LLDPE) and Polyethylene Tere-phthalate (PET) blends were prepared by twin screw extruder in different composition. The mechanical properties in 10% PET with LLDPE blend showed the best results where as tensile strength (TS) 9 MPa and percentage elongation at break (%Eb) 33. Cellulose based reinforced PET + LLDPE composite were prepared by compression molding with the optimized jute content 62% that revealed the highest mechanical properties. Cellulose based composites treated with Acacia catechu (AC) solutions (0.1% - 5% w/v) at different soaking time (2 - 20 min.) where observed significant improvement of the mechanical properties. Cellulose treated with 0.1% AC for 2 minutes soaking time depicted the highest mechanical properties and TS is 115% higher than untreated. Composite prepared with 0.1% AC treated showed the best mechanical properties as tensile strength (TS), bending strength (BS), tensile modulus (TM) and bending modulus (BM) were to be 47 MPa, 39 MPa, 1220 MPa and 1784 MPa respectively. The properties of TS, BS, TM and BM were improved as 9%, 30%, 14% and 34% respectively, which were better to untreated composite. Electrical properties such as dielectric constant and loss of the treated and untreated composites were found to be higher dielectric constant of treated jute composite than that of untreated samples. Water uptake and soil degradation of untreated and treated composites performed in significant study. The effect of AC with cellulose composites has found in remarkable changes in the mechanical properties.

关键词： Jute Cellulose Composite Acacia catechu Properties

Distribution of Nutrient Content in Soil and Leaves of Adult Areca catechu Trees

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Agricultural Biotechnology 2018年第6期7卷 146-148,218页

作者： HuANDe FENG Hua WANG Haijie HUANG Dengfeng WANG Institute of Tropical Crops Genetic Resources Chinese Academy of Tropical Agricultural Sciences

The annual dynamic changes of nutrient content in soil and leaves of adult Areca catechu trees in the *** producing area Tunchang were studied by fixed point observation method to provide the scientific basis for the rational fertilization of *** results showed that the soil of the *** plantation was weakly acidic on the whole,and soil pH was *** phosphorus content was extremely low,only 5.46 mg/*** content in *** leaves was the highest( up to 20.24 g/kg),while phosphorus content was the lowest( only 0.31 g/kg).The differences in nutrient content were related to the characteristics of nutrient *** was a difference in nutrient content of *** leaves during the annual growth *** the maximum nutrient requirement period of *** trees was from April to September,the important fertilization period of *** trees was also from April to September.

关键词： Areca catechu L. Soil Leaves Nutrient content Dynamic changes Hainan

Acute and 26-Week Repeated Oral Dose Toxicity Study of UP446, a Combination of ScutellariaExtract and AcaciaExtract in Rats

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Food and Nutrition Sciences 2013年第7期4卷 14-27页

作者： Young Chul Lee Eujin Hyun Mesfin Yimam Lidia Brownell Qi Jia Unigen Inc. Cheonan South Korea Unigen Inc. Seattle USA Unigen Inc. Seattle USA.

UP446 has been used in both joint supplements and prescription medical food. The purpose of this study was to evaluate the pharmaceutical safety of UP446 via acute and 26-week repeated oral dose toxicity study in SD rats. In acute toxicity study, UP446 was administered by oral gavage to Sprague-Dawley rats (5 males and 5 females) at a dose of 5000 mg/kg. In 26-week repeated oral dose toxicity study, UP446 at doses of 500, 1000 and 2000 mg/kg/day were given orally to groups of rats (10 rats/dose/sex) for 26-week. UP446 at a dose of 5000 mg/kg produced no treatment-related acute toxicity or mortality in any of the animals tested during 14 days of the study. In 26-week repeated dose toxicity study, there was no significant difference in body weight between the control and all treatment groups. Blackish stool and soft stool was observed in one male in the 1000 mg/kg group and in some males and females of 2000 mg/kg group. However, these changes of stool were not considered to be toxic effects because neither histopathological change in gastrointestinal tracks (GIT) nor body weight change were detected. No drug induced abnormalities were found as of body weights, food consumption, ophthalmological examinations, urinalysis, hematology, clinical chemistry, organ weights and gross necropsy in any animals in the dosing groups. These results suggest that the oral lethal dose of UP446 for male and female rats is in excess of 5000 mg/kg and the no observed adverse effect level (NOAEL) of the UP446 for both male and female rats is considered to be greater than 2000 mg/kg/day.

关键词： Scutellaria baicalensis Acacia catechu Acute Oral Toxicity Repeated Oral Toxicity

A thermosensitive gel formulation of an empirical traditional Chinese prescription for treating cervical erosion

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Acta Pharmaceutica Sinica B 2012年第5期2卷 495-501页

作者： Shuqing Zhou Xiaoling Zheng Caihong Zheng Fan Qu Xuefen Cai Juanhua Xu Women’s Reproductive Health Laboratory of Zhejiang Province and Department of Pharmacy Women’s HospitalSchool of MedicineZhejiang UniversityHangzhou 310006China Department of Traditional Chinese Medicine and Natural Drug Research College of Pharmaceutical SciencesZhejiang UniversityHangzhou 310058China

Cervical eropion,a pathological change associated with chronic cervicitis,is a common condition that is difficult to cure.M any pa tients particularly those with mild or medium infection and those preparing for pregnancy require a simple but effective *** this study,extracts of an empirical herbal prescription composed of six Chinese traditional drugs viz Cortex Phellodendri,Rhizoma Coptidis,Olibanum,Myrrha,borneol and catechu were formulated to facilitate intravaginal administration and improve *** extract of the first four components was formulated with borneol as a thermosensitive gel(TG)while an extract of catechu used to prepare a regular gel(CG)because of a chemical *** optimized TG was prepared using poloxamer 407 and poloxamer *** CG was prepared using glycerin,carbopol and *** gels were characterized in vitro in terms of release of berberine(TG)and total catechins(CG)and in vivo in a rat model of cervical *** tment by once daily application of the TG for 7 days followed by once daily application of the CG for 3 days produced a restoration of normal *** formulation of the empirical Chinese traditional remedy appears to provide a promising treatment for cervical erosion.

关键词： Thermosensitive gel Traditional Chinese prescription Cervical erosion Berberine Poloxamer Rat Cortex Phellodendri Rhizoma Coptidis Olibanum Myrrha Borneol catechu

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食用槟榔切片机的设计

湖北农业科学 2012年第16期51卷 3615-3618页

作者：陈阳陈致水海南大学机电工程学院海口570228

目前槟榔(Areca catechu L.)的切片主要依靠手工操作,加工效率低下,产业得不到很好发展,究其原因是槟榔的果肉纤维与种子的连接层致密,分离很困难。设计了一台将槟榔果肉均匀切片,并尽可能保持种子完好,且能实现种子果肉与种子自动分离... 详细信息

目前槟榔(Areca catechu L.)的切片主要依靠手工操作,加工效率低下,产业得不到很好发展,究其原因是槟榔的果肉纤维与种子的连接层致密,分离很困难。设计了一台将槟榔果肉均匀切片,并尽可能保持种子完好,且能实现种子果肉与种子自动分离的切片机,重点分析了关键部件及其参数。槟榔切片机的成功应用可有效解决槟榔收获后的加工问题,提高中国槟榔主产区农民经济收入和种植槟榔的积极性,促进当地槟榔产业的发展。

关键词：槟榔(Areca catechu L.) 切片机设计

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2015年槟榔产业发展报告及形势预测

世界热带农业信息 2017年第1期 31-39页

作者：黄慧德中国热带农业科学院科技信息研究所海南儋州571737

槟榔（Areca catechu L.）为棕榈科（Palmaceae）槟榔属（Areca）常绿乔木,原生于马来半岛的热带雨林中,是一种典型的热带植物,主要分布于亚洲与美洲的热带地区,主要生产国家有印度、斯里兰卡、菲律宾、缅甸、巴基斯坦、马来西亚、

关键词：槟榔属黄化病形势预测 Areca 屯昌县 catechu 保亭县产业发展报告琼中乐东

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槟榔防虫增产及无公害防虫新技术的研究

医学研究杂志 1991年第9期25卷 31-32页

作者：樊瑛甘炳春陈■亮薛健陈伟平任建联陈良德中国医学科学院药用植物资源开发研究所暨海南分所海南省医药联合公司药材场

槟榔Areca catechu L.为棕榈科木本植物,以果入药,有健胃、驱虫、行水、下气、宽中作用,是我国重要南药之一。槟榔除药用外还是南方群众喜食和馈赠之佳品,主产于海南省。由于槟榔栽培技术比较落后,虫害严重,无施肥习惯,一般产量较低且... 详细信息

槟榔Areca catechu L.为棕榈科木本植物,以果入药,有健胃、驱虫、行水、下气、宽中作用,是我国重要南药之一。槟榔除药用外还是南方群众喜食和馈赠之佳品,主产于海南省。由于槟榔栽培技术比较落后,虫害严重,无施肥习惯,一般产量较低且不稳定,国产槟榔远不能满足市场需要,致使每年花外汇进口槟榔以供药用。因此研究解决槟榔栽培技术、提高其产量和质量,促进槟榔生产的发展,以满足人民药用和生活需要,具有重要意义。调查研究表明,影响槟榔产量的重要因素是虫害严重。据不完全统计,每年因虫害造成的损失,一般为20％～30％,

关键词： catechu Areca 南药施肥习惯虫害防治栽培技术满足市场需要红脉穗螟幼虫死亡率总生物碱

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槟榔高产育种的理想株型设计

分子植物育种 2009年第4期7卷 763-766页

作者：黄昭奋董峰郦建权方富炯海南海德热带农业资源研究所三亚572025 贵州大学生命科学学院贵阳550025

本研究通过对槟榔高产株型的分析和育种栽培的实践,提出了"基于理想株型设计的槟榔高产育种"思路。理想株的叶片呈明显披垂型,与主杆间的夹角为70.5°±3.35°,这种叶片的空间分布可能有利于阳光的吸收。理想株的第一苞发育节位数和初... 详细信息

本研究通过对槟榔高产株型的分析和育种栽培的实践,提出了"基于理想株型设计的槟榔高产育种"思路。理想株的叶片呈明显披垂型,与主杆间的夹角为70.5°±3.35°,这种叶片的空间分布可能有利于阳光的吸收。理想株的第一苞发育节位数和初始节位高度显著较低,在第6节至第7节开始苞的分化和发育,初始节位高度为45cm左右。理想株的果穗分枝数在14个左右,与其它株型基本一样,但果穗小花数为179±19.9个,显著高于其它株型。理想型株型植株矮小,节间长度较短,叶片较大,散状披垂,展开角度较大,有利于接受更多的光照,进行光合作用,产生更多有机物。

关键词：槟榔(Areca catechu L.) 理想株型高产育种

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槟榔仁对KM小鼠的急性毒性研究

湖北农业科学 2015年第18期54卷 4532-4534,4543页

作者：刘书伟王燕胡劲召赵牧秋史云峰琼州学院热带生物与农学院海南三亚572022 琼州学院热带生态环境保护学院海南三亚572022

为研究口服槟榔（Areca catechu Linnaeus）仁汁液的毒性,进行了小鼠的经口急性毒性试验。根据预试验确定正式试验给药剂量的范围,选用KM小鼠经口灌胃,一次给药,给药后连续观察7 d,记录小白鼠的中毒反应及死亡情况,采用寇氏法计算LD50及... 详细信息

为研究口服槟榔（Areca catechu Linnaeus）仁汁液的毒性,进行了小鼠的经口急性毒性试验。根据预试验确定正式试验给药剂量的范围,选用KM小鼠经口灌胃,一次给药,给药后连续观察7 d,记录小白鼠的中毒反应及死亡情况,采用寇氏法计算LD50及LD50的95%可信限。结果表明,高剂量给药组小白鼠出现中毒反应并死亡,解剖后检查发现主要原因是胃肠和肺部的病变,测得槟榔仁汁液的LD50及LD50的95%可信限分别为12.425 g/（***）、10.610~14.551 g/（***）,表明槟榔仁汁液可以被认为是实际无毒物质。槟榔仁原液干物质的LD50及LD50的95%可信限分别为1.349 g/（***）、1.152~1.580 g/（***）,属于低毒物质。

关键词：槟榔(Areca catechu Linnaeus)仁小鼠急性毒性半数致死量