Results 61 to 70 of about 229,751 (195)

Efficiency evaluation of a system for oxidizing physicochemical cyanide in industrial effluent [PDF]

open access: yes, 2014
Los compuestos de cianuro son utilizados ampliamente en la industria, en especial en la minería, procesos de galvanización y baños electrolíticos.
Balsero Gómez, Juan Gabriel
core  

Perbandingan Kemampuan Kitosan dari Limbah Kulit Udang dengan Aluminium Sulfat untuk Menurunkan Kekeruhan Air dari Outlet Bak Prasedimentasi IPAM Ngagel II

open access: yesJurnal Teknik ITS, 2017
Koagulan yang digunakan IPAM Ngagel II untuk mengolah air baku adalah aluminium sulfat. Penggunaan aluminium sulfat yang tidak sesuai dapat mempengaruhi pH air dan menyebabkan kerugian baik dalam sisi lingkungan maupun kesehatan konsumen.
Cecilia Dwi Triastiningrum   +1 more
doaj  

PERBANDINGAN KEMAMPUAN KITOSAN DARI LIMBAH KULIT UDANG DENGAN ALUMINIUM SULFAT UNTUK MENURUNKAN KEKERUHAN AIR DARI OUTLET BAK PRASEDIMENTASI IPAM NGAGEL 2

open access: yesJurnal Teknik ITS, 2017
PDAM Surya Sembada Surabaya menggunakan air dari Kali Surabaya sebagai sumber air baku utama. Koagulan yang digunakan untuk mengolah air baku tersebut adalah aluminium sulfat.
Cecilia Dwi Triastiningrum
doaj  

Three-axis electron-beam test facility [PDF]

open access: yes
An electron beam test facility, which consists of a precision multidimensional manipulator built into an ultra-high-vacuum bell jar, was designed, fabricated, and operated at Lewis Research Center.
Dayton, J. A., Jr., Ebihara, B. T.
core   +1 more source

Chromium ion plating studies for enhancement of bearing lifetime [PDF]

open access: yes, 1982
Six 440-C hardened stainless steel roller bearing test rods were ion plated with various chromium films of thicknesses from .2 microns to 7 microns.
Davis, J. H.
core   +1 more source

Automated Feedback for 'Fill in the Gap' Programming Exercises [PDF]

open access: yes, 2005
Timely feedback is a vital component in the learning process. It is especially important for beginner students in Information Technology since many have not yet formed an effective internal model of a computer that they can use to construct viable ...
Bancroft, Peter, Roe, Paul, Truong, Dinh
core   +1 more source

Testing String Dynamics When Jarring Stuck Packer

open access: yesDEStech Transactions on Materials Science and Engineering, 2017
The jar, as a standard down-hole tool in oil well testing string, is widely used in order to free the packer when stuck. But its efficiency is not satisfied. Based on stress wave propagation theory, testing string dynamic behavior is studied during jarring process. Model analysis is performed with practical string parameters to investigate impact force
Bao-kui GAO, Liang GAO, Jing-wei REN
openaire   +2 more sources

Science materials for the gifted in grades two and three [PDF]

open access: yes, 1958
Thesis (Ed.M.)--Boston ...
Emery, Ann   +3 more
core   +1 more source

Recuperação da água de lavagem de filtro com a utilização de polieletrólitos

open access: yesRevista Principia, 1998
Investigando as possibilidades de reaproveitamento da água suja do filtro proveniente do tratamento para a população usuária de água, e obtendo as vantagens de uma água de melhor qualidade, iniciamos um novo tratamento com polieletrólitos (naturais e ...
Danilo Luís Flumignam   +3 more
doaj   +1 more source

Shellfish Tissue Monitoring in Piscataqua Region Estuaries 2010: Final Report [PDF]

open access: yes, 2011
Gulfwatch examines the effects of decades of development and industrialization on the water quality of the Gulf as it relates to human health primarily through assessing contaminant exposure of marine organisms.
Trowbridge, Philip R., Wood, Matthew A.
core   +1 more source

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