Investigations of interfaces formed between bis-1,2-(triethoxysilyl)ethane (BTSE) and aluminum after different Forest Product Laboratory pre-treatment times

2004 ◽  
Vol 221 (1-4) ◽  
pp. 340-348 ◽  
Author(s):  
M Teo ◽  
J Kim ◽  
P.C Wong ◽  
K.C Wong ◽  
K.A.R Mitchell
Keyword(s):  
Forest Product ◽  
Forest Product Laboratory ◽  
Product Laboratory ◽  
Pre Treatment

scholarly journals DAUN PANDANUS TECTORIUS PARK. POTENSINYA SEBAGAI BAHAN BAKU PRODUK SERAT ALAMI

2019 ◽  
Vol 1 (2) ◽  
pp. 121-126
Author(s):  
Fitra Haryadi ◽  
Cicilia M.E. Susanti ◽  
Endra Gunawan ◽  
Nurhaidah I. Sinaga
Keyword(s):  
Forest Product ◽  
Forest Product Laboratory ◽  
Product Laboratory ◽  
Pandanus Tectorius

Penelitian ini dilaksanakan bertujuan untuk mengetahui nilai dimensi serat daun Pandanus tectorius Park yang diambil dari Pantai Amban dan Pulau Mansinam. Selain itu berdasarkan nilai dimensi seratnya, dikaji ketepatan produk yang akan dihasilkan dengan menggunakan bahan baku serat daun P. tectorius Park. Daun P. tectorius Park. yang tumbuh di Pantai Amban diambil dari pohon dengan tinggi sekitar 2 meter dan diameter batang sekitar 12 cm, sedangkan sampel daun yang tumbuh di Pulau Mansinam diambil dari pohon dengan tinggi sekitar 3 meter dan diameter batang sekitar 15 cm serta telah berbuah. Proses maserasi yang digunakan untuk mendapatkan serat daun P. tectorius Park. yaitu mengikuti metode Forest Product Laboratory yaitu menggunakan hidrogen peroksida (H2O2) dan asam asetat glasial (CH3COOH) perbandingan 20:1 dengan beberapa modifikasi. Nilai parameter dimensi serat (panjang serat, diameter serat dan tebal dinding serat serta diameter lumen) daun pandan yang berasal dari Pulau Mansinam lebih tinggi dibandingkan yang berasal dari pesisir Pantai Amban. Panjang serat rata-rata 0,9565 mm dan 1,2098 mm untuk contoh daun dari Pantai Amban dan Pulau Mansinam. Diameter serat daun P.tectorius Park dari Amban Pantai sebesar 0,0138 mm dan 0,0151 mm untuk contoh yang dari Pulau Mansinam. Oleh sebab itu, serat daun P. tectorius Park potensial digunakan untuk produksi kertas, bahan baku tekstil dan papan serat. 

scholarly journals POTENSI LIMBAH KULIT RAMBUTAN (Nephelium lappaceum) SEBAGAI MINUMAN SEDUHAN HERBAL

2020 ◽  
Vol 13 (02) ◽  
pp. 131
Author(s):  
Denny Anggara ◽  
Meassy Shawitry Harianja ◽  
Alvika Musfitasari ◽  
Martha Marselinha ◽  
Fransiskus Xaverius Arif Wahyudianto ◽  
...  
Keyword(s):  
Processing Technology ◽  
Raw Material ◽  
Research Center ◽  
Selling Price ◽  
Forest Product Laboratory ◽  
Dry Powder ◽  
Product Laboratory ◽  
Nephelium Lappaceum ◽  
Three Stages ◽  
Simple Technology

Rambutan production in Indonesia in 2017 is 523,699 tons. Consuming rambutan fruit will affect rambutan peel as a waste. Although rambutan peel has the potential to be made into herbal brew drinks products. The research aims were to determine the productivity of rambutan peel as a raw material for herbal beverage and estimate the benefits to be obtained. The study used local rambutan fruit raw material. The research was carried out in the Forest Product Laboratory of Dipterocarps Research Center. The research aimed to determine the processing technology of rambutan peel as raw material for herbal beverage and estimated benefits to be gained. The research was conducted in three stages of activity, i.e. calculation of the potential of rambutan peel as raw material for herbal beverage, making of rambutan herbal beverage and estimated its profit. Rambutan peel can be processed into herbal brew drinks using simple technology, by making the rambutan peel into a dry powder and put it into a brewed beverage bag. The brewed beverage packaged in 1 box about 3 bags and each bag containing @ 1.5 g herbal beverage. The estimated profit of 1 box of herbal beverage was about 30.4% of the selling price. Keywords: herbal brew drinks, home industry, marine tea, rambutan peel

EELS characterization of “Smut” layer films on steel surface prepared for chrome plating by anodic etching

1995 ◽  
Vol 53 ◽  
pp. 538-539
Author(s):  
E Y. Wang ◽  
J. T. Cherian ◽  
A. Madsen ◽  
R. M. Fisher
Keyword(s):  
Steel Surface ◽  
Surface Preparation ◽  
Treatment Method ◽  
Chrome Plating ◽  
Transmission Electron ◽  
Alloy Steels ◽  
Pre Treatment ◽  
Hard Chrome ◽  
Electron Energy Loss

Many steel parts are electro-plated with chromium to protect them against corrosion and to improve their wear-resistance. Good adhesion of the chrome plate to the steel surface, which is essential for long term durability of the part, is extremely dependent on surface preparation prior to plating. Recently, McDonnell Douglas developed a new pre-treatment method for chrome plating in which the steel is anodically etched in a sulfuric acid and hydrofluoric acid solution. On carbon steel surfaces, this anodic pre-treatment produces a dark, loosely adhering material that is commonly called the “smut” layer. On stainless steels and nickel alloys, the surface is only darkened by the anodic pre-treatment and little residue is produced. Anodic pre-treatment prior to hard chrome plating results in much better adherence to both carbon and alloy steels.We have characterized the anodic pre-treated steel surface and the resulting “smut” layer using various techniques including electron spectroscopy for chemical analysis (ESCA) on bulk samples and transmission electron microscopy (TEM) and electron energy-loss spectroscopy (EELS) on stripped films.

Evaluating the effect of a group pre-treatment chemotherapy psycho-education session for chemotherapy-naive gynecologic cancer patients and their caregivers

2021 ◽  
Vol 160 (1) ◽  
pp. 234-243
Author(s):  
Diana Samoil ◽  
Nazek Abdelmutti ◽  
Lisa Ould Gallagher ◽  
Nazlin Jivraj ◽  
Naa Kwarley Quartey ◽  
...  
Keyword(s):  
Cancer Patients ◽  
Gynecologic Cancer ◽  
Education Session ◽  
Pre Treatment

The Effect of Dietary Glutathione and Coenzyme Q10 on the Prevention and Treatment of Inflammatory Bowel Disease in Mice

2004 ◽  
Vol 74 (1) ◽  
pp. 74-85 ◽  
Author(s):  
Liu ◽  
Russell ◽  
Smith ◽  
Bronson ◽  
Milbury ◽  
...  
Keyword(s):  
Inflammatory Bowel Disease ◽  
Bowel Disease ◽  
Dextran Sulfate ◽  
Coenzyme Q ◽  
Histological Evaluation ◽  
Therapeutic Effects ◽  
Prevention Study ◽  
Prevention And Treatment ◽  
Inflammatory Bowel ◽  
Pre Treatment

Because reactive oxygen species have been implicated as mediators of inflammatory bowel disease (IBD), we evaluated the potential preventive and therapeutic effects of two dietary antioxidants, glutathione (GSH) and coenzyme Q10 (CoQ10) on dextran sulfate sodium (DSS)-induced colitis in mice. Fifty female 8-wk old Swiss-Webster mice were randomly assigned to 4 groups for a pre-treatment 'prevention' study: (1) GSH (1% of diet); (2) CoQ10 (200 mg/kg/d); (3) DSS only (3% of drinking water); (4) control (no treatment). The mice in groups 1 and 2 were fed with GSH or CoQ10 for 21 wks, and the mice in groups 1, 2 and 3 were provided DSS from wk 7 for 4 cycles (1 cycle = 1 wk DSS followed by 2-wk water). Another 50 mice were randomly assigned to 4 groups for a 21-wk 'treatment' study where the mice in groups 1, 2, and 3 were administered DSS for 6 cycles (18 wks) to induce colitis. GSH and CoQ10 were added from wk 7 until the completion of the protocol. Loose stools and hemocult positivity were modestly but significantly reduced with GSH or CoQ10 at several periods during the intervention in both the prevention and treatment studies. In contrast, histological evaluation revealed increases in colonic dysplasia and ulceration with GSH or CoQ10. Thus, in this mouse model, GSH and CoQ10 appear to have a beneficial effect on acute signs of IBD, but may have an adverse impact on the chronic pathophysiology of the disease. Further studies using additional animal models are required to determine whether GSH or CoQ10 provide a favorable or unfavorable benefit:risk ratio in the prevention or treatment of IBD.

Cytoprotective Effect of Tocotrienol-Rich Fraction and α-Tocopherol Vitamin E Isoforms Against Glutamate-Induced Cell Death in Neuronal Cells

2014 ◽  
Vol 84 (3-4) ◽  
pp. 0140-0151 ◽  
Author(s):  
Thilaga Rati Selvaraju ◽  
Huzwah Khaza’ai ◽  
Sharmili Vidyadaran ◽  
Mohd Sokhini Abd Mutalib ◽  
Vasudevan Ramachandran ◽  
...  
Keyword(s):  
Vitamin E ◽  
Cell Viability ◽  
Neuronal Cells ◽  
Positive Control ◽  
Post Treatment ◽  
Mitochondrial Activity ◽  
Before And After ◽  
Pre Treatment ◽  
Tocotrienol Rich Fraction ◽  
Major Mediator

Glutamate is the major mediator of excitatory signals in the mammalian central nervous system. Extreme amounts of glutamate in the extracellular spaces can lead to numerous neurodegenerative diseases. We aimed to clarify the potential of the following vitamin E isomers, tocotrienol-rich fraction (TRF) and α-tocopherol (α-TCP), as potent neuroprotective agents against glutamate-induced injury in neuronal SK-N-SH cells. Cells were treated before and after glutamate injury (pre- and post-treatment, respectively) with 100 - 300 ng/ml TRF/α-TCP. Exposure to 120 mM glutamate significantly reduced cell viability to 76 % and 79 % in the pre- and post-treatment studies, respectively; however, pre- and post-treatment with TRF/α-TCP attenuated the cytotoxic effect of glutamate. Compared to the positive control (glutamate-injured cells not treated with TRF/α-TCP), pre-treatment with 100, 200, and 300 ng/ml TRF significantly improved cell viability following glutamate injury to 95.2 %, 95.0 %, and 95.6 %, respectively (p < 0.05).The isomers not only conferred neuroprotection by enhancing mitochondrial activity and depleting free radical production, but also increased cell viability and recovery upon glutamate insult. Our results suggest that vitamin E has potent antioxidant potential for protecting against glutamate injury and recovering glutamate-injured neuronal cells. Our findings also indicate that both TRF and α-TCP could play key roles as anti-apoptotic agents with neuroprotective properties.

Antithrombin Activity of Intact Human Platelets

1975 ◽  
Vol 34 (01) ◽  
pp. 115-126 ◽  
Author(s):  
Kiyoake Watanabe ◽  
Francis C Chao ◽  
James L Tullis
Keyword(s):  
Antithrombin Iii ◽  
Human Platelets ◽  
Significant Loss ◽  
Red Cells ◽  
Antithrombin Activity ◽  
Α2 Macroglobulin ◽  
Rapid Reaction ◽  
Pre Treatment ◽  
Different Characteristics

SummaryAntithrombin activity has been identified in intact washed human platelets. An apparent activity was demonstrated at platelet concentrations above 0.31 × 109/ml, when platelet suspensions were incubated with 2.0 NIH units/ml of thrombin. Neither red cells nor white cells revealed antithrombin activity. No significant loss of the platelet antithrombin activity was observed after ten successive washings or after treatment of platelets with antibodies to antithrombin III or α2-macroglobulin. Almost the same amount of antithrombin activity as normal platelets was demonstrated in the platelets from an afibrinogenemic patient. Pre-treatment of platelets with trypsin, papain, and neuroaminidase reduced the activity significantly, whereas lipase was without effect. The platelet antithrombin reacted with thrombin in less than 3 seconds, and this rapid reaction of platelet antithrombin was different from that of plasma antithrombin III or fibrinogen. The thrombin-like clotting activity of ancrod was inhibited by fibrinogen but not platelets. Also, unlike plasma antithrombin III or fibrinogen, brief exposure to heat (56° C or 60° C) reduced considerable amounts of platelet antithrombin activity. These results suggest that platelets possess a specific antithrombin with different characteristics from other known antithrombins.

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