نتایج جستجو برای: وتیور (vetiveria zizanioides)

تعداد نتایج: 318  

ژورنال: :مجله دانشگاه علوم پزشکی مازندران 0
معصومه کردانی masoumeh kardani msc student in envionmental pollution, khuzestan science and research branch, islamic azad university, ahvaz, iran. دانشجوی کارشناسی ارشد آلودگی های محیط زیست، پردیس علوم و تحقیقات خوزستان، دانشگاه آزاد اسلامی، اهواز، ایران افشین تکدستان afshin takdastan associate professor, department of environmental health, environmental technologies research center, jundishapur university of medical sciences, ahvaz, iranاهواز: دانشگاه علوم پزشکی جندی شاپور، گروه مهندسی بهداشت محیط

سابقه و هدف: هیدروکربن های نفتی یکی از متداول ترین گروه های آلاینده های آلی پایدار در محیط می باشند. گیاه پالایی فن آوری جدیدی است که در آن از گیاهان مقاوم برای حذف یا کاهش غلظت آلاینده های آلی و معدنی و ترکیبات خطرناک از محیط زیست استفاده می شود. هدف این مطالعه بررسی اثر گیاه وتیور بر حذف tph از خاک آلوده به نفت در غلظت های مختلف آلودگی نفتی در ناحیه صنعتی خوزستان بود. مواد و روش ها: ابتدا خاک...

سابقه و هدف: سیانید یکی از مهم ترین آلاینده های خاک و محیط زیست است. در سال های اخیر محققان زیادی کاهش میزان سیانید را با روش های فیزیکی، شیمیائی و بیولوژی مورد بررسی قرار داده اند. گیاه پالائی یکی از روش های نوین برای کاهش و پالایش آلاینده های خاک و آب است .هدف اصلی این پژوهش بررسی توانایی پالایش آلودگی سیانید خاک توسط گیاه وتیور است. مواد و روش ها: برای ارزیابی اثربخشی گیاه پالائی گیاه وتیور...

2014
O. O. Falola

Vetiver grass was harvested at 4, 6 and 8-week old re-growth. The chemical composition and quantitative analyses of anti-nutritional components were determined. The result showed that dry matter and fiber content increased with age while crude protein, mineral content and anti-nutritional components reduced with age. It was concluded that age of re-growth significantly affect the nutrient and a...

Journal: :Chemosphere 2003
B Yang W S Shu Z H Ye C Y Lan M H Wong

The lead (Pb)/zinc (Zn) tailings contained high concentrations of heavy metals (total Pb, Zn, Cu and Cd concentrations 4164, 4377, 35 and 32 mg kg(-1), respectively), and low contents of major nutrient elements (N, P, and K) and organic matter. A field trial was conducted to compare growth performance, metal accumulation of Vetiver (Vetiveria zizanioides) and two legume species (Sesbania rostra...

2003
Xindi Liao Shiming Luo Yinbao Wu Zhisan Wang

Vetiveria zizanioides and Cyperus alternifolius were measured for their ability to decontaminate pig farm wastewater in 50_38.5_23 cm (L_W_H) plastic boxes. These plants were grown in pig farm wastewater with CODCr at 825 mg/L, BOD5 at 500 mg/L, NH3-N at 130 mg/L and TP 23 at mg/L, C. alternifolius and V. zizanioides could cut down those index to 64%, 68%, 20% and 18% respectively by hydraulic ...

2001
KATHARINE NASH SUDING DEBORAH GOLDBERG

Many studies have documented that patterns of species composition change after gap creation, but few have addressed the processes responsible for this change. The idea of competitive reduction, that disturbance removes biomass, reducing competitive intensity and allowing competitively inferior fugitive species to colonize, has been widely accepted but rarely tested. We suggest an alternative hy...

Journal: :International journal of phytoremediation 2015
Xian-Chun Chen Yun-Guo Liu Guang-Ming Zeng Guo-Feng Duan Xin-Jiang Hu Xi Hu Wei-Hua Xu Mei Zou

In order to facilitate transportation and accelerate growth, roots of Vetiveria zizanioides must be pruned before transplanting. The present research is aimed to investigate the best root length for vetiver grown in cadmium (Cd) polluted soil. The results indicated that 6 cm root-length plant (RLP) was the best candidate in phytoremediation of Cd-contaminated soil for its stronger tolerance and...

2016
Khushminder Kaur Chahal Urvashi Bhardwaj Sonia Kaushal Amanpal Kaur Sandhu

Vetiver [Chrysopogon zizanioides (L.) Roberty syn. Vetiveria zizanioides (L.) Nash] commonly known as khas-khas, khas, khus-khus or khus grass belongs to the family Poaceae. The roots of this grass on steam distillation yield an essential oil mainly consisting of sesquiterpenes (3-4 %), sesquiterpenols (18-25 %) and sesquiterpenones (7-8 %). Among these, the major economically important active ...

Journal: :Tanzania journal of health research 2010
Varadharajan Subhadradevi Kuppusamy Asokkumar Muthuswamy Umamaheswari Andichettiarthirumalasia Sivashanmugam Rajakannu Sankaranand

Free radicals induce numerous diseases by lipid peroxidation and DNA damage. It has been reported that some of the extracts from plants possess antioxidant properties capable of scavenging free radicals in vivo. Vetiveria zizanioides belonging to the family Gramineae, is a densely tufted grass which is widely used as a traditional plant for aromatherapy, to relieve stress, anxiety, nervous tens...

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