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Synthesis, Crystallographic, Monoclinic, Inflexible, Antifungal Assessment of Schiff based resin 席夫基树脂的合成、晶体学、单斜、不灵活、抗真菌评价
Pub Date : 2019-06-19 DOI: 10.26692/SUJO/2019.6.42
N. Rajput, M. A. Moghal, A. Moghal, K. Khan, A. Balouch, Kanwal Kanwal
The present study investigates the preparation of a newly prepared Schiff base BHNMXD and Schiff based resin PMBHNMXD via polymerization. The condensation or polymerization procedure was used with formaldehyde (HCHO) at temperature 70 to 80 ˚C for 2-3 h. The prepared Schiff base BHNMXD and its respective resinPMBHNMXD were recrystallized from methanol to attain pure resin. After successful synthesis of Schiff base and resin was characterized by different instrumental techniques such as; CHN, elemental microanalysis, thermogravimetric analysis (TGA) studies of Schiff based resin, energy- dispersive x-ray spectroscopy EDS mass spectrometry, E.I-MS (electron impact ionization), 1HNMR spectroscopy and MALDI-TOF mass spectrometry clearly investigated the molecular weight and structural information of synthesized compounds. The FT-IR spectra of resin PMBHNMXD showed stronger absorption band at 1632 cm-1 of azomethine >C=NH confirming the compound formation. The SEM analysis showed the morphology of Schiff base and resin showing, longitudinal spherical rough, inflexible and rigid structure. The structures and components were carefully investigated by X-ray diffraction .The crystallographic evaluation of Schiff base and its resin, aproved the monoclinic sharp crystalline structure. These active materials have shown high efficiency against the antifungal growth of Aspergillus Flavus (G-ve), Candida albicans (G-ve) and Aspergillus Niger (G-ve),by agar well diffusion method.
本文研究了通过聚合法制备新制备的希夫碱BHNMXD和希夫基树脂PMBHNMXD。用甲醛(HCHO)在70 ~ 80℃条件下缩聚2 ~ 3 h,将制备的希夫碱BHNMXD及其相应的树脂pmbhnmxd从甲醇中再结晶得到纯树脂。席夫碱合成成功后,树脂通过不同的仪器技术进行了表征,如;CHN、元素微量分析、Schiff基树脂热重分析(TGA)、能量色散x射线能谱、EDS质谱、e - i - ms(电子冲击电离)、1HNMR谱和MALDI-TOF质谱等清楚地研究了合成化合物的分子量和结构信息。PMBHNMXD树脂在1632 cm-1处有较强的吸收带,证实了该化合物的形成。扫描电镜分析表明,希夫碱和树脂的形貌呈纵向球形粗糙,具有刚性和刚性结构。通过x射线衍射对其结构和组成进行了细致的研究,对希夫碱及其树脂进行了结晶学鉴定,证实其为单斜晶型。这些活性物质对黄曲霉(Aspergillus Flavus, G-ve)、白色念珠菌(Candida white bicans, G-ve)和黑曲霉(Aspergillus Niger, G-ve)的生长均有良好的抑菌效果。
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引用次数: 2
Impact of Occupational Health and Safety Management on Organizational Performance: An Evidence from Pharmaceutical Industry of Karachi 职业健康安全管理对组织绩效的影响:来自卡拉奇制药行业的证据
Pub Date : 2019-06-19 DOI: 10.26692/SUJO/2019.06.34
A. M. Pirzada, F. Mahar, M. A. Qureshi, S. Ahmed, N. Samoon, K. Laghari, Kelash Kelash
This is a quantitative study which aims at exploring the impact of occupational Health and safety management (OHSM) on the performance of organization. For conducting this study, survey method was administered that involved 40 pharmaceutical companies of Karachi. These companies were taken as SMEs as they constituted of medium and small sizes based on their level of operations. An appropriate sample was taken which was analyzed using SPSS (Statistical Package for Social sciences). The use of simple regression was employed to see the impact of OHSM on organizational performance (OP). A positive relation was found between OHSM and OP using Pearson correlation analysis and the Cronbach’s alpha was found to be 0.95 which expresses an excellent internal consistency. The results in this study depict that OHSM strongly impacts the organizational performance (OP) and there was less emphasis all implementing occupational Health and Safety by entrepreneurs.
这是一项旨在探讨职业健康安全管理(OHSM)对组织绩效影响的定量研究。为进行本研究,采用调查方法,涉及卡拉奇40家制药公司。这些企业按经营水平分为中小型企业,因此被称为中小企业。选取合适的样本,使用SPSS (Statistical Package for Social sciences)进行分析。运用简单回归法考察OHSM对组织绩效的影响。Pearson相关分析发现OHSM与OP呈正相关,Cronbach’s alpha为0.95,具有良好的内部一致性。本研究结果显示职业健康管理对组织绩效有强烈的影响,而企业家对职业健康安全的重视程度较低。
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引用次数: 0
Network Security Using Python: An Empirical Analysis of Advance Encryption Standard (AES) 使用Python的网络安全:高级加密标准(AES)的实证分析
Pub Date : 2019-06-19 DOI: 10.26692/SUJO/2019.6.48
A. Burdi, A. A. Khan, S. Awan, F. Abbasi, S. H. F. Naqvi, A. Nizamani
Nowadays, security in network environment is becoming a challenging problem, providing prevention of confidential records arises as a critical task. Modern creation in network can reduce the rate of uncertainty as-well-as at the same time growth of threats increases rapidly in past few decades i.e. vulnerabilities, and potential risks. Confidentiality of crucial informationis one of the main objectives, to protect integrity when its traveling from one node to another, ensure it can’t divulge by malicious insider, anonymous, trust, and malicious attacks.In this research paper, the proposed solution is to design interface where communication can be done in a secure manner, behind it has a mechanism which hide essential information, symmetric key cryptographic algorithm named advance encryption standard (AES) using python with additional library called pycrypto and tries to formulate algorithm efficiency, accuracy, execution time plus system capability.
如今,网络环境的安全已成为一个具有挑战性的问题,提供机密记录的预防成为一项关键任务。网络中的现代创造可以降低不确定性,同时在过去几十年中威胁的增长也迅速增加,即漏洞和潜在风险。关键信息的保密性是主要目标之一,保护信息从一个节点传输到另一个节点时的完整性,确保信息不会被恶意内部人、匿名者、信任者和恶意攻击者泄露。本文提出的解决方案是设计一个可以安全地进行通信的接口,其背后有一个隐藏基本信息的机制,采用python和pycrypto附加库的对称密钥加密算法,称为高级加密标准(advanced encryption standard, AES),并试图制定算法的效率、准确性、执行时间和系统能力。
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引用次数: 0
Spatial-Temporal Change Assessment of Manchar and Keenjhar Lake Using RS and GIS 基于RS和GIS的Manchar和Keenjhar湖时空变化评价
Pub Date : 2019-06-19 DOI: 10.26692/SUJO/2019.6.38
H. Islam, H. Abbasi, G. Sultana, M. Ahmed, A. Chughtai
To maintain sustainability of life on earth, water is an indispensable nutrient and truly a vital resource for aquatic ecosystem. It also plays an important role in the socio-economic development and is one of the key factors for driving the economy of any region. Rapid increase in population and change in climatic patterns has vigorously affected the water resources. The remote sensing is an efficient tool for monitoring of natural resources. This research is focused on spatio-temporal change analysis of Manchar Lake and Keenjhar Lake, Sindh, Pakistan using Landsat multi-sensor data MSS, TM, ETM+ & OLI to analyze land cover from 1972 to 2017 and calculating water indices using Principal Component Analysis (PCA) and supervised parallelepiped classification achieving an overall accuracy 98.86% and 0.1 of standard deviation value. The results revealed that the significant changes in land cover due to unusual climatic patterns, significant fall in precipitation rate and multiple anthropogenic activities. These changes had adverse impact on eco-system of lakes and as well as on public health
为了维持地球上生命的可持续性,水是一种不可或缺的营养物质,是水生生态系统的重要资源。它在社会经济发展中也发挥着重要作用,是推动任何地区经济发展的关键因素之一。人口的迅速增长和气候模式的变化对水资源产生了重大影响。遥感是监测自然资源的有效工具。本文利用Landsat多传感器数据MSS、TM、ETM+和OLI对巴基斯坦信德省Manchar湖和Keenjhar湖1972 - 2017年的土地覆盖进行时空变化分析,利用主成分分析(PCA)和监督平行六面体分类方法计算水体指数,总体精度为98.86%,标准差值为0.1。结果表明,不同寻常的气候模式、降水率的显著下降和多种人为活动导致了土地覆被的显著变化。这些变化对湖泊生态系统和公众健康产生了不利影响
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引用次数: 1
Food Safety Practices and Population Perception Regarding Street Food Vendors in Hyderabad, Pakistan 巴基斯坦海得拉巴街头食品摊贩的食品安全实践和人口认知
Pub Date : 2019-06-19 DOI: 10.26692/SUJO/2019.6.52
A. Marri, A. H. Soomro, S. A. Sheikh, M. B. Bhutto
The study was conducted in district Hyderabad, Sindh, Pakistan and for this two sets of questionnaires were developed each for food vendors (40) and population using street foods (40). All respondents were randomly selected and interviewed. The study revealed that all the vendors were male (100 %). Among the vendors, 95% were literate (at least primary education) and 50% were ≤ 30 years. Food safety related training was not received by any vendor in study area. A significant majority of vendors did not know about good handling practices (GHP) and good manufacturing practices(GMP) i.e. 52.5 and 45%, respectively, while an overwhelming majority (80%) was familiar to food borne illnesses (FBIs). Most vending carts were in poor hygienic condition (72.5%), infested with flies (97.5%)and only 32.5 % vendors were in clean clothes. Some vendors experienced infectious diseases like, hepatitis (5%) and tuberculosis (7.5%). In case of population using street vended foods, only 5% were satisfied with hygienic condition of food vendors, quality of raw material (10%), serving utensils (7.5%) and food freshness and purity (15%), therefore, significant majority (87.5%) of population using street foods experienced FBIs. Meanwhile, main reasons for consuming street food were low food cost (90%), ease (85%) and palatability(75%).Significant associations (p < 0.05) were observed between vendors’ demographics (age and education) and their vending practices, while highly significant associations (p < 0.05) were recorded between street food users’ education and perceptions. In vendors’ self-reported analysis, average valuefor vendors’ knowledge remained 7.75, vendors’ attitude stayed 23.18,while average value for vendors’ food safety practices was recorded as 6.51. Study concludes that venders’ food safety knowledge and practices are poor, therefore, population using street foodsare not seemed satisfied with safety measures in street food vending.
该研究在巴基斯坦信德省海得拉巴地区进行,为此开发了两套调查问卷,分别针对食品摊贩(40人)和使用街头食品的人口(40人)。所有受访者都是随机选择和访谈的。研究显示,所有的卖主都是男性(100%)。在商贩中,95%的人受过文化教育(至少是初等教育),50%的人年龄≤30岁。研究区域内没有任何供应商接受过食品安全相关培训。绝大多数供应商不了解良好处理规范(GHP)和良好生产规范(GMP),分别为52.5%和45%,而绝大多数(80%)熟悉食源性疾病(FBIs)。大多数售货车卫生状况较差(72.5%),有苍蝇出没(97.5%),只有32.5%的摊贩穿着干净的衣服。一些供应商患有传染病,如肝炎(5%)和结核病(7.5%)。在使用街头食品的人群中,只有5%的人对食品摊贩的卫生状况、原料质量(10%)、服务器具(7.5%)和食品的新鲜度和纯度(15%)感到满意,因此,绝大多数(87.5%)使用街头食品的人群经历过FBIs。与此同时,消费街头食品的主要原因是食品成本低(90%)、方便(85%)和美味(75%)。摊贩的人口统计学特征(年龄和教育程度)与他们的自动售货行为之间存在显著相关性(p < 0.05),而街头食品使用者的教育程度与认知之间存在高度显著相关性(p < 0.05)。在供应商自述分析中,供应商知识的平均值为7.75,供应商态度的平均值为23.18,供应商食品安全实践的平均值为6.51。研究认为,摊贩的食品安全知识和做法较差,因此,使用街头食品的人群似乎对街头食品摊贩的安全措施不满意。
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引用次数: 0
Investigation of External QE of P3DDT Photocathode for use in Gaseous UV Photon Detectors 气体紫外光子探测器用P3DDT光电阴极外部定量定量的研究
Pub Date : 2019-06-19 DOI: 10.26692/SUJO/2019.6.56
I. A. Halepoto, B. A. Laghari, R. H. Mari, A. K. Rajper, I. Shaikh
The quantum efficiency results of a new air stable organic semiconductor UV photocathode P3DDT are presented in this paper.Measurement of QE was carried out as a function of wavelength in spectral region 190-250nm. It shows cut off near 230nm. However, QE is too low to be of interest as compared to CsI but being air stabile and easyto prepare photocathodeswith large area it can find applications in barium flouride scintilation based calorimetry and plasma diagnositic where photon flux is very high.
本文报道了一种新型空气稳定有机半导体紫外光电阴极P3DDT的量子效率结果。在190 ~ 250nm光谱范围内测量了QE随波长的变化。它显示在230nm附近切断。然而,与CsI相比,QE太低而无法引起人们的兴趣,但由于它具有空气稳定性并且易于制备大面积光电阴极,因此可以在基于氟化钡闪烁的量热法和等离子体诊断中找到应用,其中光子通量非常高。
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引用次数: 0
Light and Scanning Electron Microscopy of Some Species of Genus Solanum (Solanaceae) With Special Referance to the Importance of Trichomes 龙葵属(龙葵科)若干种植物的光镜和扫描电镜研究——兼论毛状体的重要性
Pub Date : 2019-06-19 DOI: 10.26692/SUJO/2019.6.57
N. S. Jilani, S. Memon, J. Mangi, M. T. Rajput, S. S. Hassney
The trichomes are taxonomically very important because of their use in plant classification with other morphological characters. This study provides information about trichomes of six species add name of species here of genus Solanum. This study will also helpful to produce more information to develop modern nomenclature for trichomes. The plant material was taken from Sindh University Herbarium as well as new plant substance was gathered from the field for the study. During the trichomal analysis the plant components were observed under stereo zoom microscope. Provisional and long-term slides were produced. For the scanning electron microscopic observation, the plant material was treated with ethanol alcohol for 20 minutes, ca 1mm2 piece of specimens were fitted on the stubs made of metal with double-sided cellophane tape and also covered with C-30-50 nm gold by Jeol JFC- 1500 Ion sputter machine. After coating samples were observed as well as pictures were captured on different magnifications by enhancing voltage between 5-15 KV by Scanning Electron Microscope (SEM) Jeol JSM-T200 & Jeol JSM-T6380 at Biological Research Centre and Central Research Laboratory Karachi, University of Karachi.
毛状体与其他形态特征在植物分类中具有重要意义。本研究提供了茄属6种的毛状体资料,并附种名。本研究也将为毛状体的现代命名提供更多的信息。植物材料取自信德省大学植物标本室,并从野外采集新的植物物质进行研究。在滴虫分析过程中,在立体变焦显微镜下观察植物成分。制作了临时和长期载玻片。扫描电镜观察,将植物材料用乙醇酒精处理20分钟,用双面玻璃纸胶带将约1mm2的试样贴合在由金属制成的桩上,并用Jeol JFC- 1500离子溅射机覆盖C-30-50 nm的金。在卡拉奇大学生物研究中心和卡拉奇中央研究实验室的Jeol JSM-T200和Jeol JSM-T6380扫描电子显微镜(SEM)上,通过在5-15 KV之间增强电压,观察涂层样品并拍摄图像。
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引用次数: 0
Implementation Challenges in Information Retrieval System 信息检索系统的实现挑战
Pub Date : 2019-06-19 DOI: 10.26692/SUJO/2019.6.55
U. Zaki, M. Memon, D. Hakro, Khalil-ur-Rehman Khoumbati, M. Hameed, M. A. Zaki, G. Nabi
Natural scenes text recognition has become increasingly attractive in recent years. Several research results have been developed on different languages for the sake of text recognition from natural scenes. However, there is no system for identifying Urdu text from natural scenes. This paper presents a framework steps involved in recognition of Urdu text from landscape images. Furthermore, the paper focus on issues and challenges faced during experimentation and implementation. Challenges includes multi-script text on a single image, different text font with variation in text sizes, light shadow, reflection, text color, text contrast with background, words or ligature missing, blur, low resolution , skew and neon signboard. In the end, we also give a summary of issues and challenges of Urdu Text retrieval system from natural scenes.
近年来,自然场景文本识别越来越受到人们的关注。为了从自然场景中识别文本,已经在不同的语言上取得了一些研究成果。然而,目前还没有从自然场景中识别乌尔都语文本的系统。本文提出了从景观图像中识别乌尔都语文本的框架步骤。此外,本文还重点讨论了实验和实施过程中面临的问题和挑战。挑战包括单个图像上的多脚本文本,文本大小变化的不同文本字体,光影,反射,文本颜色,文本与背景的对比,文字或连接缺失,模糊,低分辨率,倾斜和霓虹灯招牌。最后,总结了乌尔都语自然场景文本检索系统存在的问题和面临的挑战。
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引用次数: 3
Evaluating the suitable artificial diet for rearing of the green lacewing adult Chrysoperla carnea (Stephens, 1836) (Neuroptera: Chrysopidae) under Laboratory Conditions 实验室条件下绿草蛉成虫绿草蛉(Chrysoperla carnea, Stephens, 1836)(神经翅目:绿草蛉科)人工饲料适宜饲养的评价
Pub Date : 2019-06-19 DOI: 10.26692/SUJO/2019.6.36
Qadeer Ahmed, R. Sultana, Raza Muhammad, N. Ahmad
The common green lacewing, Chrysoperla carnea (Stephens, 1836) is best-known as bio-control agent. It is mass reared and released for biological control programs against sucking insect pests in Agricultural crops. A laboratory experiment was conducted to evaluate the artificial diets for the rearing of C. carnea was conducted in bio-control laboratory at Nuclear Institute of Agriculture, Tandojam. Different solution concentration of diets i.e.; Brewer yeast, Protein hydrolysate, Honey and Sugar were formulated at different (1, 2, 3, 4 and 5 grams) solution concentration with 20 ml water were offered to newly emerged C.carnea adults inside the four liter glass jars to observe different biological parameters. The shortest pre- oviposition period (3.5±0.09c) was recorded on brewer yeast 4 grams then, 2 3 and 5 grams followed by Protein solution and Honey solution whereas; longest pre-oviposition period (4.9±0.36a) was recorded on 1 gram Sugar solution. Moreover, significantly highest (P ≤ 0.05) fecundity and fertility (215.6±6.18a, 194.2±5.55a) respectively were observed on 4 gram brewer yeast then 2, 3 and 5 grams followed by Protein solution and Honey solution. The longest longevity of C.carnea female and male 49.3±2.34a and 39.0±2.08a) respectively was recorded on 4 gram brewer yeast then 2, 3 and 5grams followed by Protein solution, Honey solution., whereas, shortest longevity of female and male (14.6.±1.67cd and 9.6±1.33d) respectively was observed on 1 gram sugar solution. The shortest incubation, larval and pupal duration (3.0±0.33d, 13.3± 0.48d and 4.1±0.10 c ) respectively was recorded on 4 gram brewer yeast then 2, 3 and 5 grams, followed by Protein solution, Honey solution. The longest incubation, larval and pupal duration (4.95±1.20 a, 15.9± 1.50a and 6.7±0.80a) was observed on 1 gram Sugar solution The findings of this study can significantly persuade the better and cheapest artificial diet ingredients for the adult rearing of this predator in the laboratory and brewer yeast is very cheapest having significant role in adult rearing of C. carnea.
常见的绿草草,Chrysoperla carnea (Stephens, 1836)是最著名的生物防治剂。它被大量饲养和释放,用于农业作物中吸虫的生物防治计划。在坦多贾姆核农业研究所生物防治实验室对人工饲料的饲养效果进行了评价。不同的日粮溶液浓度,即;将啤酒酵母、水解蛋白、蜂蜜和白砂糖按不同浓度(1、2、3、4和5 g)配制成溶液,加20 ml水,放入4升玻璃瓶中,观察新出的细菌成虫的生物学参数。啤酒酵母4 g、2 3 g和5 g的产卵前期最短(3.5±0.09c),其次是蛋白质液和蜂蜜液;1 g糖溶液的产卵前期最长,为4.9±0.36a。4 g啤酒酵母、2、3、5 g蛋白质溶液和蜂蜜溶液的产仔率和育仔率分别为215.6±6.18a、194.2±5.55a,显著高于(P≤0.05);以4 g啤酒酵母、2、3、5g蛋白质溶液、蜂蜜溶液分别为雄、雌菌寿命最长(49.3±2.34a)和39.0±2.08a)。在1 g糖溶液中,雌虫和雄虫的寿命最短,分别为14.6±1.67天和9.6±1.33天。4 g啤酒酵母、2 g、3 g和5 g啤酒酵母的孵育期最短,分别为3.0±0.3d、13.3±0.48d和4.1±0.10 c,其次是蛋白质液、蜂蜜液。1 g糖溶液的孵化期、幼虫期和蛹期最长,分别为4.95±1.20 a、15.9±1.50a和6.7±0.80a。本研究结果可为实验室饲养这种捕食者提供较好的、最便宜的人工饲料原料,而啤酒酵母是最便宜的,在成虫饲养中具有显著作用。
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引用次数: 0
Feeding behavior of Catfish, Ompok pabda from Indus River near Jamshoro, Sindh 信德省Jamshoro附近印度河流域Ompok pabda鲶鱼的摄食行为
Pub Date : 2019-06-19 DOI: 10.26692/SUJO/2019.6.45
D. S. Thebo, N. T. Narejo, P. Khan, H. Kalhoro, G. Dastagir, A. H. Qadri
The present investigation on feeding behavior of catfish, Ompok pabda from riverIndus near Jamshoro was initiated for the period of three months from March to May 2017. Total 200 specimens ranged from 4.0 -30.0 cm and 6.1-60.5 g in length and weight respectively were procured from the catch of local fishermen.The collected specimens were brought to laboratory preserved in 5% formalin. Results of the presentinvestigation revealed that the feeding behavior of Ompok pabdawas found to be carnivorous with higher feeding preferences for insect larvae (60.43%), followedby zooplanktons (23.58) and 3rd preferred food was debris (11.93). It was noted during the present course of investigation that small fish (4.0-10.0 cm)preferred zooplankton, protozoa and debris while medium sized fish (11.0-16.0 cm) showed preference to insect larvae, worms and detritus and large fish (17.0-30.0 cm) exhibited insect larvae, zooplankton, detritus and debris. The gape of mount was measured in relation to total length and found to be positively correlated with length of fish in the present study.
本研究于2017年3月至5月对Jamshoro附近的印度河鲶鱼Ompok pabda的摄食行为进行了为期3个月的调查。共200只样本来自本地渔民,长度为4.0至30.0厘米,重量为6.1至60.5克。采集的标本保存在5%福尔马林中。结果表明:食虫行为以肉食性为主,对昆虫幼虫的偏好较高(60.43%),其次为浮游动物(23.58%),第三为碎屑(11.93%)。在本次调查过程中发现,小鱼(4.0 ~ 10.0 cm)偏爱浮游动物、原生动物和碎屑,中型鱼(11.0 ~ 16.0 cm)偏爱昆虫幼虫、蠕虫和碎屑,大鱼(17.0 ~ 30.0 cm)偏爱昆虫幼虫、浮游动物、碎屑和碎屑。在本研究中,测量了与总长度的关系,发现与鱼的长度呈正相关。
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引用次数: 1
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