Search Result of "Wei Zhang"

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ผลงานตีพิมพ์ในวารสารวิชาการ

Seaweed and seaweed-derived metabolites as prebiotics

ผู้แต่ง:ImgDr.Suvimol Charoensiddhi, Assistant Professor, ImgReinu E. Abraham, ImgPeng Su, ImgWei Zhang,

วารสาร:

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ที่มา:วิทยาสารเกษตรศาสตร์ สาขา วิทยาศาสตร์

หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Study of Dropping Speed in Eggs of Oncomelania hupensis, a Snail Intermediate Host of Schistosomiasis)

ผู้เขียน:ImgXingjian Xu, ImgXianxiang Yang, ImgXiapin Li, ImgWei Zhang, ImgQingsang Pan, ImgZhengan Xiong

สื่อสิ่งพิมพ์:pdf

Abstract

Oncomelana hupensis (Gredler, 1881) is an intermediate host of Schistosomiasis japonica in China. In order to understand the factors controlling sedimentation and drifting of adult snails and snail eggs in rivers, three aspects were investigated by experiment. Firstly, the specific gravity of the snail eggs which was found to be 2.29 g/cm3 ; secondly, the range of dropping speed of the snail eggs through a water column which was found to be 1.19 to 3.77 cm/s; thirdly, a formula to determine dropping speed of the eggs was established. The formula was statistically validated by comparison with observed values. The results are relevant to both the development and design of irrigation schemes, and also to river management, where dispersal of snails and their eggs needs to be controlled.

Article Info
Agriculture and Natural Resources -- formerly Kasetsart Journal (Natural Science), Volume 034, Issue 1, Jan 00 - Mar 00, Page 25 - 29 |  PDF |  Page 

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ที่มา:วิทยาสารเกษตรศาสตร์ สาขา วิทยาศาสตร์

หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Experimental Measurement of Specific Gravity of Oncomelania hupensis and Its Eggs)

ผู้เขียน:ImgXingjian Xu, ImgXianxiang Yang, ImgChuanhua Yu, ImgWei Zhang, ImgQingsang Pan, ImgZhengan Xiong

สื่อสิ่งพิมพ์:pdf

Abstract

To understand the distribution of Oncomelania hupensis, the intermediate host of Schistosomiasis japonicum, the specific gravities of the snails and their eggs must be known. When the specific gravities are known, the snail and its egg drop speed can be calculated and drift distance can be deduced in the river. The measurement of specific gravities of snails and eggs was carried out in accordance with the routine measures of specific gravity of river silt in China. The results indicated an average specific gravity for the live snails of 1.80 ? 0.01 g/cm3, and for snail eggs of 2.29 ? 0.01 g/cm3. The measured value of the specific gravity for the snails and its eggs must be considered when water condervancy facilities are disigned and/or rebuilt for prevention of the spread of snails in the endemic area of schistosomiasis.

Article Info
Agriculture and Natural Resources -- formerly Kasetsart Journal (Natural Science), Volume 028, Issue 3, Jul 94 - Sep 94, Page 471 - 475 |  PDF |  Page 

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Researcher

ดร. สุวิมล เจริญสิทธิ์, ผู้ช่วยศาสตราจารย์

ที่ทำงาน:ภาควิชาวิทยาศาสตร์และเทคโนโลยีการอาหาร คณะอุตสาหกรรมเกษตร บางเขน

สาขาที่สนใจ:Effect of food ingredients on digestive system and gut health, Biorefinery processes for extraction of high value bioactive compounds from natural products, Production of functional food ingredients from algal biomass and agricultural products

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