检索结果-南通市图书馆

In Vitro Picloram-lnduced Somatic Embryogenesis from Leaflets of Cherry （Prunus incisa Thunb,）

Journal of Life Sciences 2011年第11期5卷 913-920页

作者： ben mahmoud kaouther Elloumi Nadhra Chakroun Ahlem Ahmed Jemmali Philippe Druart Institut National Agronomique de Tunisie Cite El Mahrajene Tunis 1082 Tunisie Departement Biotechnologie et Physiologie Vegetale Institut National de la Recherche Agronomique de Tunisie Rue Hedi KarrayAriana 2080 Tunisie Unite ＂Genie Biologique ＂ Departement Sciences du Vivant Centre Wallon de Recherches Agronomiques Chaussee de Charleroi234 Gembloux 5030 Belgique

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Does oil price affect the value of firms？ Evidence from Tunisian listed firms

引用

Frontiers in Energy 2016年第1期10卷 1-13页

作者： kaouther ZAABOUTI Ezzeddine ben MOHAMED Abdelfettah BOURI Faculty of Economics and Management of Sfax University of SfaxMonastir 5046 Tunisia Department of Accounting College of Business & Economics QassimUniversity Buraidah 51431 Kingdom of Saudi Arabia

A new debate on the potential impact of oil price changes on the value of firms was initiated in this paper. Using a stochastic frontier approach, an attempt was made to derive the optimal value Q＊ of firms and calculate the Q value observed. Then the shortfall （Q＊-Q） which represents the inefficiency term was explained. Starting from 19 industrial Tunisian firms listed on the Tunis Stock Exchange between 2007 and 2011, the fact that variation of oil prices can largely explain distortions in the value of firms was empirically demonstrated.

关键词： oil price value of firm stochastic frontier approach industrial Tunisian firms

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Antimicrobial activity of Tunisian Euphorbia paralias L.

引用

Asian Pacific Journal of Tropical Biomedicine 2017年第7期7卷 629-632页

作者： Malek Besbes Hlila kaouther Majouli Hichem ben Jannet Mahjoub Aouni Maha Mastouri Boulbaba Selmi Laboratory of Transmissible Diseases and Biological Active Substances Department of Pharmaceutical Sciences Faculty of Pharmacy University of Monastir Avenue Avicenne 5000 Monastir Tunisia Laboratory of Biochemistry Research Unit:UR 12ES08'Cell Signaling and Pathologies' Department of Biology Faculty of Medicine University of Monastir Monastir Tunisia Laboratory of Heterocyclic Chemistry Natural Products and Reactivity Team:Medicinal Chemistry and Natural Products Department of Chemistry Faculty of Sciences of Monastir University of Monastir Monastir Tunisia Laboratory of Bioresources:Integrative Biology and Exploiting Higher Institute of Biotechnology of Monastir Department of Molecular Biology Cellular and Biotechnology University of Monastir Monastir Tunisia

Objective: To examine the potential antimicrobial activity of Euphorbia paralias L.(Euphorbiaeae) leaves and stems ***: The antimicrobial activity was tested against six microbial strains: Escherichia coli ATCC 8739, Bacillus subtilis ATCC 6633, Salmonella enterica CIP 8039, Staphylococcus aureus ATCC 6538, Pseudomonas aeruginosa ATCC 9027 and Candida albicans ATCC 90028 by two different methods, the disk method and the dilution ***: Our results showed the important antimicrobial activity of the chloroform extract of the stems towards the majority of the strains by using both methods. Bacillus subtilis was the most sensitive strain(MIC = MBC = 15 mg/mL).Conclusion: Thus, some extracts of Euphorbia paralias can be used in the treatment of infectious diseases caused by microbes.

关键词：大戟属植物 paralias L. 抗菌剂活动 MIC MBC

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Lower Bifidobacteria counts in both duodenal mucosa-associated and fecal microbiota in irritable bowel syndrome patients

引用

World Journal of Gastroenterology 2009年第23期15卷 2887-2892页

作者： Angèle PM Kerckhoffs Melvin Samsom Michel E van der Rest Joris de Vogel Jan Knol kaouther ben-Amor Louis MA Akkermans Gastrointestinal Research Unit Department of Gastroenterology and Surgery University Medical Center Utrecht Heidelberglaan 100 F02.618 3584CX Utrecht The Netherlands BioVisible BV LJ Zielstraweg 1 9713 GX Groningen The Netherlands Danone Research-Centre for Specialized Nutrition Bosrandweg 20 6704PH Wageningen The Netherlands

AIM: To determine the composition of both fecal and duodenal mucosa-associated microbiota in irritable bowel syndrome (IBS) patients and healthy subjects using molecular-based techniques. METHODS: Fecal and duodenal mucosa brush samples were obtained from 41 IBS patients and 26 healthy subjects. Fecal samples were analyzed for the composition of the total microbiota using fluorescent in situ hybridization (FISH) and both fecal and duodenal brush samples were analyzed for the composition of bif idobacteria using real-time polymerase chain reaction. RESULTS: The FISH analysis of fecal samples revealed a 2-fold decrease in the level of bifidobacteria (4.2 ± 1.3 vs 8.3 ± 1.9, P < 0.01) in IBS patients compared to healthy subjects, whereas no major differences in other bacterial groups were observed. At the species level, Bifidobacterium catenulatum levels were significantly lower (6 ± 0.6 vs 19 ± 2.5, P < 0.001) in the IBS patients in both fecal and duodenal brush samples than in healthy ***: Decreased bifidobacteria levels in both fecal and duodenal brush samples of IBS patients compared to healthy subjects indicate a role for microbiotic composition in IBS pathophysiology.

关键词：微生物利用双歧杆菌肠粘膜综合征粪便患者微生物组成样本分析

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Front-Face Fluorescence Using UV-LED Coupled to USB Spectrometer to Discriminate between Virgin Olive Oil from Two Cultivars

引用

Food and Nutrition Sciences 2019年第2期10卷 119-127页

作者： Gilbert Yvon Mbesse Kongbonga kaouther ben Hassine Hassen Ghalila Dhafer Malouche Faculty of Science University of Bangui Bangui Central African Republic Laboratoire de Spectroscopie Atomique Moléculaire et Applications (LSAMA) Faculty of Sciences University of Tunis El Manar Tunis Tunisia Centre for Atomic Molecular Physics and Quantum Optics (CEPAMOQ) Faculty of Science University of Douala Douala Cameroon Laboratory of Biochemistry UR: Human Nutrition and Metabolic Disorder Faculty of Medicine Monastir Tunisia Institut de l’Olivier Unité Technologie et Qualité Sfax Tunisia National Institute for Applied Sciences and Technologies Tunis Tunisia Higher School of Agriculture of Mograne Mograne Tunisia Engineering School of Statistics and Information Analysis University of Carthage Tunis Tunisia

A simple setup using a 365 nm LED coupled to a USB spectrometer through an optical fibre, in a front-face fluorescence configuration, was used to investigate the ability of fluorescence spectroscopy technique to discriminate between varieties of olive oil. To achieve this task, Virgin Olive Oils (VOO) from two major Tunisian olive cultivars known as Chetoui and Chemlali were used. Spectral analysis showed a clear separation between these two VOO varieties. A one-way ANOVA attests that this discrimination is significant. The Principal Components Analyses (PCA) showed that the normalized fluorescence intensities are the good parameters for this discrimination. This observation strengthens the potential of our spectral parameters to perform reliable analysis.

关键词： Chemometrics Fluorometry Oils Olive Oil PCA UV/Visible

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

In vitro antibacterial activity of the Hertia cheirifolia *** oils

引用

Journal of Coastal Life Medicine 2016年第11期4卷 865-867页

作者： kaouther Majouli Malek Besbes Hlila Guido Flamini Hichem ben Jannet Abderraouf Kenani Laboratory of Biochemistry:Research Unit 12ES08 Cell Signaling and PathologiesFaculty of MedicineUniversity of MonastirTunisia Laboratory of Transmissible Diseases and Biologically Active Substances MDT01Faculty of PharmacyUniversity of MonastirTunisia Department of Pharmacy University of PisaStreet Bonanno 656126 PisaItaly Laboratory of Heterocyclic Chemistry Natural Products and Reactivity Team:Medicinal Chemistry and Natural Products(LR11ES39)Faculty of SciencesUniversity of MonastirTunisia

Objective:To investigate the antibacterial activity of essential oils from Hertia cheirifolia ***,vegetative part(leaves+stems)and roots against a panel of bacterial ***:The essential oils from Hertia cheirifolia ***,vegetative part(leaves+stems)and roots were analyzed by gas chromatography and gas chromatography-mass *** antibacterial activity of essential oils was evaluated in vitro by the broth dilution ***:The results showed that the essential oil of flowers exhibited a strong antibacterial activity against Staphylococcus aureus with minimal inhibitory concentration of 0.078 mg/***:The essential oils of Hertia cheirifolia can be a good source of antibacterial *** can be used for pharmaceutical treatments.

关键词： Essential oil Chemical composition Antibacterial activity Hertia cheirifolia L.

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Analytical Study of a Heat Recovery/Desiccant Cooling System under Tunisian Climatic Conditions

Analytical Study of a Heat Recovery/Desiccant Cooling System...

引用

作者： Seifennasr Sabek kaouther ben Nasr Ridha Chouikh Amenallah Guizani the Centre des Recherches et des Technologies de l’Energie (CRTEn) the Ecole Nationale d’Architecture et d’Urbanisme the Institut Supérieur de Mathématiques Appliquées et d’ Informatique (ISMAI)

The solar potential energy in Tunisia can be used like a principal factor for the operation of new technologies of air *** could be carried out like approaches of simulation,analyzes experimental or both *** this paper,we present an analytical solution of heat and mass transfer processes in regenerator and air conditioning system(ACS) cores of a heat recovery/desiccant cooling system(HRDCS) under Tunisia weather *** programs were carried out to test the principal components of the HRDC *** results show that the coefficient of performance of system improves when we use the renewable energy for heating and *** study is significant and effective to prove the efficiency of such HRDC systems in this country.

关键词： Air conditioning liquid desiccant cooling system simulations Tunisian climatic conditions

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Total phenolic compounds,antioxidant potential and α-glucosidase inhibition by Tunisian Euphorbia paralias L.

引用

Journal of Coastal Life Medicine 2016年第8期4卷 628-633页

作者： Malek Besbes Hlila kaouther Majouli Fethia Harzallah Skhiri Hichem ben Jannet Mahjoub Aouni Maha Mastouri Boulbaba Selmi Laboratory of Transmissible Diseases and Biological Active Substances Faculty of PharmacyUniversity of MonastirAvenue Avicenne5000 MonastirTunisia Biochemistry Laboratory:Cell Signaling and Pathologies Research Unit:UR 12ES08Faculty of Medicine of MonastirTunisia Laboratory of Genetic Biodiversity and Valorisation of BioresourcesLR11ES41Higher Institute of Biotechnology of MonastirUniversity of MonastirMonastir 5000Tunisia Laboratory of Heterocyclic Chemistry Natural Products and ReactivityTeam:Medicinal Chemistry and Natural ProductsFaculty of Sciences of MonastirUniversity of MonastirMonastirTunisia Laboratory of Bioresources:Integrative Biology and exploiting Higher Institute of Biotechnology of MonastirMonastirTunisia

Objective:To examine the potential antioxidant and anti-α-glucosidase inhibitory activities of Tunisian Euphorbia paralias *** and stems extracts and their composition of total polyphenol and ***:The different samples were tested for their antiradical activities by using 2,2’-azinobis(3-ethylbenzothiazoline-6-sulfonic acid)(ABTS)and 1,1-diphenyl-2-picrylhydrazyl(DPPH)***α-glucosidase activity,α-glucosidase(0.3 IU/mL)and substrate,2500μmol/L p-nitrophenylα-D-glucopyranoside were used;absorbance was registered at 405 ***:The leaves acetonic extract exhibited the strongestα-glucosidase inhibition[IC_(50)=(0.0035±0.001)μg/mL],which was 20-fold more active than the standard product(acarbose)[IC_(50)=(0.07±0.01)μg/mL].Acetonic extract of the leaves exhibited the highest quantity of total phenolic[(95.54±0.04)μg gallic acid equivalent/mg]and flavonoid[(55.16±0.25)μg quercetin equivalent/mg].The obtained findings presented also that this extract was detected with best antioxidant capacity[IC_(50)=(0.015±0.01)μg/mL]against DPPH and a value of IC_(50)equal to(0.02±0.01)μg/mL against *** relationship between polyphenolic content of the tested Euphorbia paralias *** and stems extracts and its antioxidant activity(DPPH and ABTS)was *** positive linear correlation was got between ABTS and total phenolic(R^(2)=0.751).Conclusions:The findings clearly demonstrate that the use of a polar solvent enables extraction of significant quantities of phenol compounds and flavonoids.

关键词： Euphorbia paralias L. Polyphenolic compounds Antioxidant activity Anti-α-glucosidase activity

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Differentiated Thyroid Cancer with Thyroglobulin Elevation and Negative Iodine Scintigraphy (TENIS Syndrome)

引用

International Journal of Otolaryngology and Head & Neck Surgery 2014年第4期3卷 149-153页

作者： Raja Sfar Tarek Kamoun Manel Nouira Hamza Regaieg Nouha Ammar Hela Charfi Achraf Bahloul Maha ben Fredj kaouther Chatti Mohsen Guezguez Habib Essabbah Department of Nuclear Medicine Sahloul Hospital Sousse Tunisia Department of Nuclear Medicine Sahloul Hospital Sousse Tunisia Sousse University Sousse Tunisia University of Monastir Monastir Tunisia Department of Nuclear Medicine Sahloul Hospital Sousse Tunisia

Background and Objectives: Following the initial management, some patients with differentiated thyroid cancer (DTC) develop a state of high thyroglobulin (Tg) and Negative Iodine Scintigraphy. The predisposing factors and outcome of this condition are unclear. In this study, our objectives were to analyze the characteristics of patients with high Tg level and negative Iodine scintigraphy and to determine the predictive factors for development of high Tg and negative scintigraphy. Patients and Methods: Retrospective study of 34 patients undergoing treatment for DTC, followed in the Nuclear Medicine department of the University Hospital—Sahloul Sousse between 1990 and 2006 and having a high Tg and negative Iodine scintigraphy. Fourteen patients had Tg between 2 and 10 ng/ml, 16 had Tg between 11 and 100 ng/ml and 4 patients had Tg more than 100 ng/ml. Results: There were 25 women and 9 men. The mean age was 51.65 years. In 94.1% of cases, the tumor was papillary carcinoma. Follicular tumors accounted for only 5.9%. The mean nodule size was3.26 cm. Capsular invasion was seen in 47.1% cases. The locoregional invasion was found in 35.3%. The lymph node extension was found in 84.8% of patients having lymph node surgery. Lymph node involvement was observed in 92.8% of patients with papillary cancer but it was found in 7.2% of patients with follicular cancers. Lymph node invasion was unilateral in 28.6% (N1a) and bilateral, contralateral or mediastinal in 71.4% (N1b). Initial level of Tg was as follows: 7 patients had Tg between 2 and 10 ng/ml, 14 patients had Tg between 11 and 100 ng/ml and 12 had Tg more than 100 ng/ml. The mean number of radioactive Iodine cure was 11.08 for patients with Tg more than 100 ng/ml with a significant difference (P = 0.001). Conclusion: Among epidemiological, pathological and clinical characteristics, lymph node invasion is the most frequent parameter found in patients with a DTC with high Tg level and negative Iodine scintigraphy.

关键词： Differentiated Thyroid Cancer Thyroglobulin Iodine Scintigraphy TENIS Syndrome

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

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

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

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

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

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：