Results 61 to 70 of about 35,800 (230)

Preparation of a superabsorbent polymer and exploration of its properties [PDF]

open access: yes, 2007
Natural polymers (from the Greek poly meaning “many” and meros meaning “parts”) are found in many forms such as horns of animals, tortoise shell, shellac (from the lac beetle), rosin (from pine trees), asphalt, and tar from distillation of organic ...
Jagdev, Amrita
core  

Dielectric study of electrolyzed rubber [PDF]

open access: yes, 1998
Rubber was produced by placing rubber latex between two electrodes between which an external voltage was maintained. The thickness of the rubber deposited on the anode was measured as a function of time of electrolysis, voltage applied across the ...
Khalid, Kaida   +4 more
core   +1 more source

Transformation of the Agrarian Landscape and Hope in the Central Kalimantan Peatlands

open access: yesAsia Pacific Viewpoint, EarlyView.
ABSTRACT In Kalimantan, Indonesian Borneo, agrarian state programs and corporate strategies seek to transform indigenous Ngaju Dayak into sedentary farmers. Focusing on the notion of transformation, the paper traces whether and how rural people can engage in struggles against structural injustices.
Anu Lounela
wiley   +1 more source

Understanding of the dynamic structure of unvulcanized NR : an essential step to address its quality variability [PDF]

open access: yes, 2018
The first part of this presentation is a visit of the different structural levels of raw natural rubber. The second aims to show that those structures are continuously changing along the way that transforms the latex exuding from the tree to the raw ...
Vaysse, Laurent
core  

Occupational Contact Urticaria, Protein Contact Dermatitis and Concomitant Airway Diseases in the Finnish Register of Occupational Diseases in 2005–2020: Main Causes and Occupations at Risk

open access: yesContact Dermatitis, EarlyView.
This Finnish registry study shows that concomitant occupational asthma and rhinitis are common in patients with occupational contact urticaria or protein contact dermatitis, often sharing the same exposure. When evaluating occupational immediate allergy, both skin and airway symptoms should be considered.
Ville Ojanen   +4 more
wiley   +1 more source

Ethylene and jasmonate as stimulants of latex yield in rubber trees (Hevea brasiliensis): Molecular and physiological mechanisms. A systematic approximation review

open access: yesAdvanced Agrochem
The rubber tree Hevea brasiliensis (Willd. Ex Adr. De Juss.) Müell Arg.] is an important source of latex for the production natural rubber. Natural rubber is an important biopolymer used in various industries, but aspects related to hormonal regulation ...
Nixon Florez-Velasco   +3 more
doaj   +1 more source

Regulation of HbPIP2;3, a latex-abundant water transporter, is associated with latex dilution and yield in the rubber tree (Hevea brasiliensis Muell. Arg.)

open access: yes, 2015
Rubber tree (Hevea brasiliensis) latex, the source of natural rubber, is synthesised in the cytoplasm of laticifers. Efficient water inflow into laticifers is crucial for latex flow and production since it is the determinant of the total solid content of
An, Feng   +7 more
core   +3 more sources

Natural Rubber Latex Allergy [PDF]

open access: yesArchives of Internal Medicine, 2001
In the past 10 years, IgE-mediated allergy to natural rubber latex has become a significant health problem in industrialized countries, especially among health care workers, patients with congenital malformations, and children with a history of multiple surgical interventions.
R, Brehler, B, Kütting
openaire   +2 more sources

Glove Reuse Limits in Hair Dyeing: Permeation of p‐Phenylenediamine and Aminophenols Through Natural Rubber Latex and Neoprene After Repeated Washing

open access: yesContact Dermatitis, EarlyView.
Disposable glove reuse reduced chemical protection during repeated hair‐dye exposure. Under ASTM F739 testing, natural‐rubber‐latex deteriorated rapidly after one reuse, whereas neoprene performed better initially but also declined over repeated cycles. Wash type had no significant effect. These findings support single‐use only and discourage the reuse
Pei‐Ting Jian, Yu‐Wen Lin
wiley   +1 more source

Transcriptome analysis of Pará rubber tree (H. brasiliensis) seedlings under ethylene stimulation

open access: yesBMC Plant Biology, 2021
Background Natural rubber (cis-1,4-polyioprene, NR) is an indispensable industrial raw material obtained from the Pará rubber tree (H. brasiliensis).
Yoshimi Nakano   +7 more
doaj   +1 more source

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