The goal of this research is recognition of species of pollution and a rough estimate of rate of transmitted pollution through northern Iran rivers to Caspian sea. Sampling from 3stations up-river, mid-river, and down-river in Lavij rood, Gland rood, and Sabze rood in a 6 month period from 2008/5/22 to 2008/11/22 coincides with warm, low rain, cold and rainy seasons and parameters as temperatur...

 In this study the quality of Omani and United Arab Emirates bottled water brands which are sold in Oman were assessed by comparing the chemical composition indicated on manufacturer’s label with local and international bottled water standards. Results indicated that all the bottled water brands are complying with local and international standards. According to piper diagram, t...

Air merupakan salah satu komponen yang harus terpenuhi bagi kelangsungan makhluk hidup. Airtanah bagian dari sumberdaya air baik untuk minum maupun kebutuhan bersih lainnya. Berkaitan dengan masalah tersebut, maka tujuan dilakukannya penelitian ini yaitu mengetahui potensi airtanah layak digunakan sebagai berdasarkan kandungan hidrogeokimianya. Metode metode pengambilan sampel sebanyak 108 data...

The search of alternative compounds to control tropical diseases such as schistosomiasis has pointed to secondary metabolites derived from natural sources. Piper species are candidates in strategies to control the transmission of schistosomiasis due to their production of molluscicidal compounds. A new benzoic acid derivative and three flavokawains from Piper diospyrifolium, P. cumanense and P....

Four new compounds were isolated from the branches of Piper montealegreanum Yuncker, a shrub found in the Amazon rainforest, including two new dihydrochalcones named claricine (1) and maisine (2), a cinnamic acid derivative 3 and a phenylalkanoid 4, along with a porphyrin identified as the known compound phaeophytin a (5). The structures were established using spectroscopic experiments, includi...

In a structure analysis of the compounds of the genus Piper (Family Piperaceae), we identified five phenolic amides from Piper nigrum, seven compounds from P. retrofractum, and two compounds from P. baccatum. All the phenolic amides possess significant antioxidant activities that are more effective than the naturally occurring antioxidant, alpha-tocopherol. One amide, feruperine, has antioxidan...

In the current study, the qualitative status of potable well water was assessed using the groundwater quality index during a course of 4 years (2014-2017). This study was carried out with an aim to monitor the drinking water resources from 12 potable wells on the multivariate analysis basis and for determination of groundwater quality index, the following 13 physicochemical parameters including...

This study investigates the characteristics of an antioxidant cream made from methanol extract Piper sarmentosum leaves, which is locally known as wild betel or pokok kadok in Malay. The secondary metabolites leaves were subjected to phytochemical tests detect presence natural compounds. Antioxidant activity was described by its total phenolic content (TPC) and flavonoid (TFC), assessed 2,2-Dip...

as funds belonging to them, and that they should have a loud voice in their expenditure. This is put by Mr. Thomas (Hansard, May 24, 1922) as follows r " We want an assurance that, in 1923, when we come to review the situation those who have paid the piper shall at least have an opportunity of calling the tune/' and "We want that the Approved Societies shall themselves have a voice in determini...