Hob Y Ta Ni G of Deer Hides a Small Fur Ski S
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Acacia Nilotica Pods)
J Biotechnol Biomed 2019; 2 (1): 015-023 DOI: 10.26502/jbb.2642-9128006 Research Article Innovation an Eco Friendly Technology: Tanning System using Semi Chrome and Improved Indigenous Tannins (Acacia Nilotica Pods) Haj Ali Alim A1*, Gasm elseed GA2, Ahmed AE3 1Department of National Leather Technology Center, Industrial Researcher and Consultant Center, Khartoum, Sudan 2Department of Chemical Engineering, University of Science and Technology, Omdurman, Sudan 3Department of Chemistry, Sudan University for Science and Technology, Khartoum, Sudan *Corresponding Author: Alim Abd Elgadir Haj Ali, Department of National Leather Technology Center, Industrial Researcher and Consultant Center, Khartoum, Sudan, P.O Box: 5008, E-mail: [email protected] Received: 08 January 2019; Accepted: 16 January 2019; Published: 21 January 2019 Abstract Semi-chrome tanned leathers were obtained using spray dried powder which were carried out using leaching of 70% crushed ‘Garad’ and 30% ‘Neem’ barks mixture to develop the fulfillment of ‘Garad’ tanning power. Tanning system was conducted in industrial research consultancies center, Sudan. Mechanical and physio-chemical analyses of the leather were executed using SLTC. Mechanical properties of the produced leather were compared with traditional tanned leather and the strengths, of tensile, one edge tear and two edges tear, of semi chrome tanned leather were: (200 kg/cm2, 52 and 100 kg/cm) respectively where the distension and strength of grain was (10 mm) and the thermal stability (100°C). The experimental explain that the blending ‘Garad-Neem’ significantly enhanced the quality of tannins powder and tanned leather. Keywords: Leather; Acacia Nilotica; Azadirachta Indica; Pre-tannage; Semi-Chrome Tannage; Mechanical; Physicochemical Properties 1. -
Position and Extent of the Elongation Zone in the Root Tip of the Broad Beanvicia Faba L
BIOLOGIA PLANTARUM (PRAHA) 8 (6) : 427--430, 1966 Position and Extent of the Elongation Zone in the Root Tip of the Broad Bean Vicia faba L. ALENA ADA_MKOVX and KAREL BENE~ Institute of Experimental Botany, Czechoslovak Academy of Sciences, Praha* Received November 9, 1965 Abstract. It was found by measuring the length of the cortex cells of the root tips of the broad bean Vieia faba L. that the beginning of the elongation zone lies at about 1--2 ram from the initials and its end at about 7--8 mm fl'om the initials. Shrinkage of the object during micro- technical treatment was negligible. The autonomy of the individual tissues of the root tip was taken into account. Introduetion Biochemical investigation of anatomically strictly defined parts of the root tip has become a common method for studying cell growth and tissue differ- antiation (BRow~r and BROADBENT 1951, I~OBINSO~r and BROW~r 1952). The results of the present work should serve as an anatomical basis for a series of papers dealing with the biochemical investigation of growth and differenti- ation processes in the bean root tip. The beginning and end of the elongation zone should be established here. Material and Methods Seeds of the broad bean Vicia faba L. cultivar Chlumeck~ were sterilized for 4 min with 70 % ethanol, washed for 8 h in running tap water and left to swell for 12 h in distilled water at 26 ~ C. The seeds were then placed onto wet paper wool laid on PVC plates with openings so that they lay above the opening. -
Saint Demetrios of Thessaloniki
Master of Philosophy Faculty of Arts University of Glasgow Saint Demetrios of Thessaloniki By Lena Kousouros Christie's Education London Master's Programme September 2000 ProQuest Number: 13818861 All rights reserved INFORMATION TO ALL USERS The quality of this reproduction is dependent upon the quality of the copy submitted. In the unlikely event that the author did not send a com plete manuscript and there are missing pages, these will be noted. Also, if material had to be removed, a note will indicate the deletion. uest ProQuest 13818861 Published by ProQuest LLC(2018). Copyright of the Dissertation is held by the Author. All rights reserved. This work is protected against unauthorized copying under Title 17, United States C ode Microform Edition © ProQuest LLC. ProQuest LLC. 789 East Eisenhower Parkway P.O. Box 1346 Ann Arbor, Ml 48106- 1346 ^ v r r ARV- ^ [2,5 2 . 0 A b stract This thesis intends to explore the various forms the representations of Saint Demetrios took, in Thessaloniki and throughout Byzantium. The study of the image of Saint Demetrios is an endeavour of considerable length, consisting of numerous aspects. A constant issue running throughout the body of the project is the function of Saint Demetrios as patron Saint of Thessaloniki and his ever present protective image. The first paper of the thesis will focus on the transformation of the Saint’s image from courtly figure to military warrior. Links between the main text concerning Saint Demetrios, The Miracles, and the artefacts will be made and the transformation of his image will be observed on a multitude of media. -
Winter 2019 Newsletter
Winter 2018 Aboriginal Education SHARING STORIES TO S UPPORT OUR CHILDREN, YOUTH, AND FAMILIES voice kiʔsuk kyukyit – Good afternoon, Ktunaxa territory xastsxlxalt – Good day, nslxcin from Sinixt territory Weyt-kp – Hello, Secwepemc territory Tawnshi - Hello, Michif (Language of the Metis People) Nestled in the mountains with still a light frosting of snow, Aboriginal Education is well underway for the 2018-2019 school year. We are moving forward with the Aboriginal Education department goals of improving literacy and numeracy through land based learning, providing opportunities for students to share their individual stories, and working toward Truth before Reconciliation, deepening relationships with the traditional territories our school district operates on and the Metis Nation. Created by the Aboriginal Education staff last year, we looked at the fire within and our daily work with students, families, and communities. This is such an exciting time in education, in history, and in our personal stories – as we all witness Indigenous ways of knowing blossom! What does blossoming look like in SD8? Whether that is through student pride in sharing a pow wow dance, a personal regalia story, a drum song, a new graphic design, entrance to College, or graduating with dignity and identity, or connecting to community teachings, or finding a sense of belonging in school, the faces of SD8 Aboriginal students, their learning, their successes and their dreams and goals are diverse. Yet, we see the goals of our District Enhancement Agreement flourishing through a variety of student successes, as individual as each of those bright faces. The District Aboriginal Education Advisory Committee and Elders’ Council, for the first time this year, welcomed guests from both the Syilx, Okanagan Nation Alliance, as well as guests from Enderby, from the Secwepemc Nation. -
Phase-Out of Chromium (III) in Leather Tanning
Phase-out of chromium (III) in leather tanning This case study aims to illustrate an alternative process. It is based on publicly available information on company's experience as well as on substance hazards, alternatives to the hazardous substance and regulatory information. The case study is neither complete nor comprehensive in illustrating all substitution options of a substance but rather exemplary. 1. Case description The conversion of hides or skin into leather involves a tanning process. In g e n e ra l , d e p e n d i n g u p o n the end application of leather, two tanning methods are used: vegetable tanning or chrome tanning. 80 – 90 % of tanneries around the world today use salts of trivalent chromium for tanning. The main chromium compound used for leather tanning is chromium (III) hydroxide sulphate, Cr(OH)SO4 (CAS No. 12336-95-7; EC No. 235-595-8). Chromium is associated with several negative effects for the environment and human health. The main hazards related to chromium (III) is that it can be oxidised to chromium (VI), e.g. at very low pH values when oxygen is present. Cr (VI) is a suspected carcinogen and causes skin sensitisation. Since chromium (III) can transform into chromium (VI), its use in articles that may be in direct skin contact, should be avoided. 1.1. Hazards of chromium (VI) Chromium (VI) causes an allergic contact dermatitis and sensitisation at very low concentrations. The risk assessment made by Denmark (also proposing a restriction to market certain articles of leather coming into direct contact with the skin) demonstrates that chromium (VI) present in shoes and other leather articles poses risks for consumers. -
Mangrove Arboretum
Mangrove arboretum The arboretum in Bac Lieu is a collection of mangrove species from the south of Viet Nam. The arboretum is a show case of species richness and thus contribute to the preservation and research of mangrove forests. Furthermore, it serves eco-tourism and is considered as learning resource on mangroves in the Mekong area for students and practitioners. Worldwide, about 73 different species are accounted as ‘true mangroves’. In a total, there are 39 true mangroves described for Vietnam and at least 27 can be found in the South of Vietnam. There are not many stands of natural old mangroves remaining in the Mekong Delta, most of the forest is reforested. For reforestation efforts in the past only few species were selected and the more important it is for the future to diversify the planting schemes since every species is the result of a long evolutionary adaptation process and thus much more resilient if planted at the right place with certain environmental conditions. Mangroves store about 78,8 tons of carbon per hectare and provide high ecological services such as being nursery and foraging space for numerous coastal shrimp, crab and fish species important to local fisheries and aquaculture. Pop-up content of CPMD layer Forests -> Arboretum: Bạc Liêu Mangrove Arboretum Area 5 ha Location Giong Nhan hamlet, Hiep Thanh commune, Bac Lieu town (district), Bac Lieu province No. Vietnamese Scientific name Use name 1 Bần ổi Sonneratia Wood is not good, lightweight, soft. It plays the role ovate Back of breaking wind, protecting the coastal area 2 Cóc đỏ Lumnitzera Wood is used in household appliances, for fuel. -
Home Tanning of Leather
B-86 1937 HOME TANNING OF LEATHER issued by The ExtensioR Service Agricultural and Mechanical College of Texas and The United States Department of Agriculture H. H. Williamson, Director, College Station, Texas 8-86 TEXAS AGRICULTURAL EXTENSION SERVICE G. G. GIBSON. DIRECTOR, COLLEGE STATION, TEXAS Home Made Gauge Knives-The materials required are one piece of timber 2 x 4 x 24 inches, one piece of timber 2 x 4 x 20 inches, one .1 inch bolt or large nail, one corner brace 4 x 4 x ~ inches. and one butcher knife. Horne Tanning of Leather By M. K. Thornton, Leather Specialist One of the oldest arts known to man, the tanning of leather, has become almost a lost art to farmers and ranchers. Yet it is a fairly easy process if care is taken. ' There are many methods of tanning, and no one of them rnay be called best. The methods described here are among the easiest and produce satisfactory results. No attempt is made to give details to suit every kind of weather. The ideal temperature is from 70 to 75 degrees F"ahrenheit. In no case should the hides be permitted to freeze. The warmer the weather the more quickly hides spoil, and as - a result there is greater likelihood of getting weak or tender leather. The hides to be tanned may be fresh, green salt, dry salt, or flint. A fresh hide is one which has been taken from the animal and allowed to cool. A green salt hide is one which has been well salted shortly after being removed from the animal, folded and placed in a cool place until the salt has penetrated well, and then stored until ready for use. -
Protective Armor Engineering Design
PROTECTIVE ARMOR ENGINEERING DESIGN PROTECTIVE ARMOR ENGINEERING DESIGN Magdi El Messiry Apple Academic Press Inc. Apple Academic Press Inc. 3333 Mistwell Crescent 1265 Goldenrod Circle NE Oakville, ON L6L 0A2 Palm Bay, Florida 32905 Canada USA USA © 2020 by Apple Academic Press, Inc. Exclusive worldwide distribution by CRC Press, a member of Taylor & Francis Group No claim to original U.S. Government works International Standard Book Number-13: 978-1-77188-787-8 (Hardcover) International Standard Book Number-13: 978-0-42905-723-6 (eBook) All rights reserved. No part of this work may be reprinted or reproduced or utilized in any form or by any electric, mechanical or other means, now known or hereafter invented, including photocopying and re- cording, or in any information storage or retrieval system, without permission in writing from the publish- er or its distributor, except in the case of brief excerpts or quotations for use in reviews or critical articles. This book contains information obtained from authentic and highly regarded sources. Reprinted material is quoted with permission and sources are indicated. Copyright for individual articles remains with the authors as indicated. A wide variety of references are listed. Reasonable efforts have been made to publish reliable data and information, but the authors, editors, and the publisher cannot assume responsibility for the validity of all materials or the consequences of their use. The authors, editors, and the publisher have attempted to trace the copyright holders of all material reproduced in this publication and apologize to copyright holders if permission to publish in this form has not been obtained. -
PREPARATION and EVALUATION of MANGROVE TANNINS-BASED ADSORBENT for the REMOVAL of HEAVY METAL IONS from AQUEOUS SOLUTION by OO C
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Repository@USM PREPARATION AND EVALUATION OF MANGROVE TANNINS-BASED ADSORBENT FOR THE REMOVAL OF HEAVY METAL IONS FROM AQUEOUS SOLUTION by OO CHUAN WEI Thesis submitted in fulfillment of the requirements for the degree of Doctor of Philosophy August 2008 ACKNOWLEDGEMENTS First of all, I would like to express my sincere gratitude and appreciation to my supervisor, Assoc. Prof. Mohd. Jain Noordin Mohd. Kassim for his persistent guidance, inspiration and support that made this study a success. I would like to thank Prof. A. Pizzi from École Nationale Supérieure Des Technologies Et Industries Du Bois (ENSTIB), Université Henri Poincaré, France for his valuable guidance in the interpretation of MALDI mass and solid-state NMR spectra. My sincere thanks to Prof. Wan Ahmad Kamil Che Mahmood and Dr. Afidah Abdul Rahim for their supports and valuable advices. I would like to acknowledge Universiti Sains Malaysia for offering me the fellowship and financial support throughout my study. I would also like to thank the Embassy of France in Malaysia for granting me a short term attachment in ENSTIB. My sincere thanks also go to all the technical staffs of the School of Chemical Sciences, USM especially Mr. Aw Yeong, Mr. Ali, Mr. Yee Chin Leng and Mrs. Saripah Mansur, who helped during many stages of this study. I wish to thank my friends and colleagues, Mr. Wendy Rusli, Dr. Loo Ai Yin, Dr. Yam Wan Sinn, Mr. Vejayakumaran, Ms. Sharon, Dr. Ha Sie Tiong, Mr. -
Combat Manual
ADRIAN EMPIRE IMPERIAL ESTATES WRIT #17 COMBAT MANUAL ADOPTED JULY 2002 LAST UPDATED DECEMBER 2019, EFFECTIVE 1 JANUARY 2020 ©Copyright 1993-2020 The Adrian Empire, Inc. All rights reserved. Adria is a registered trade name of the Adrian Empire, Inc. Anyone is welcome to point out any error or omission that they may find. Adrian Empire – IEW #17 – Combat Manual Page 2 of 35 TABLE OF CONTENTS I. GENERAL RULES AND REQUIREMENTS ....................................................... 5 A. HEALTH ......................................................................................................................................... 5 B. INHERENT DANGERS ................................................................................................................ 5 C. PROOF OF QUALIFICATION ................................................................................................... 5 D. MINIMUM AGES .......................................................................................................................... 5 E. GENERAL RULES OF COMBAT .............................................................................................. 5 1. Safety ............................................................................................................................................ 5 2. Marshals Must Be Present ............................................................................................................ 5 3. Entering the List Field ................................................................................................................. -
The Commercial Utilization of Tanbark Oak and Western White Oak in Oregon
The Commercial Utilization of Tanbark Oak and Western White Oak in Oregon by Ralph Dempsey /d\ A Thesis 7 1958 Presented to the Faculty ( of the School of Forestry Ore'on State College In Partial Fulfillment of the Requirements for the Degree Bachelor of Science March 1938 Approved: rofessor 0± forestry INTRODUCTION Tanbark oak, Lithocarpus densiflora (Hooker and Arnott) Rehder, and Oregon white oak (uercus arryana Hooker) are Oreon's most potentially valuable hardwoods. These trees are comparatively well known, but they have received little commercial attention. The people engac'ec9 in the manu- facture cf leather have used the bark of Tanbark oak he- cause it produces a considerable quantity of hirh rad.e tannin. The tree, which has previously been left to rot after the bark had been peeled, could in some way be uti- lized. The Oregon white oak has been used chiefly as fuel. Its uses in other fields has gradually deceased until it is now little used except for firewood. The wood of these species have received little consideration and their possi- bilities are unknown. This study was made for the purpose of reviewing the previous uses of these woods, and with the advent of new methods of kiln drying, to find a solution to a more efficient utilization. The main objections to the use of these woods have been their severe warping sn cheek- ing in seasoning. The results of j:revious studies, and experimental work bein carried on by the Forest Products Laboratory, indicates these woods can be successfully kiln dried. It is hoped that this will give these western oaks a place in the lumber markets of the nation, and there- by lead to a more efficient utilization of these woods. -
The History and Practice of Bark Tanning in Newfoundland and Labrador
Heritage NL Fieldnotes Series, 007, June 2020 The History and Practice of Bark Tanning in Newfoundland and Labrador [email protected] -- Heritage NL -- PO Box 5171, St. John’s, NL, Canada, A1C 5V5 By Katie Crane and Dale Gilbert Jarvis, Heritage NL Introduction In June 2017, Bell Island native, craft producer, and maker Clare Fowler appeared on Heritage NL’s Living Heritage Podcast to talk about her work, which focuses on the use of seal fur and seal leather. In the course of the conversation, she brought up the topic of seal skin leather boots, and the use of birch bark in tanning the leather. Regarding sealskin boots, she noted: They have such a historical and cultural significance on the Northern Peninsula. So many people have used them and they were just like a necessity of life. They're absolutely beautiful and stunning but not too many people are making them anymore and not too many people are doing the birch bark processing. I know a number of people who are experimenting with it but we were only able to track down one gentleman who was actually still doing it on somewhat of a small scale because the demand for it was lessening over time. The tradition of bark tanning and the use of bark mixtures for the preservation of textiles has a long history in Newfoundland and Labrador. This article traces the linguistic history of the verb form of the word bark, the use of bark as a preservative and colourant, describes the process involved in the creation of tanned materials in CRANE and JARVIS.