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810  Articles
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Currently, developers of modern refrigeration equipment, in accordance with the plans of the UN, are moving to natural refrigerants (hydrocarbons, carbon dioxide and ammonia) that do not have an adverse technological impact on the ecosystem of the planet.... see more

Currently, developers of modern refrigeration equipment, in accordance with the plans of the UN, are moving to natural refrigerants (hydrocarbons, carbon dioxide and ammonia) that do not have an adverse technological impact on the ecosystem of the planet.... see more

The current environmental situation is forcing developers of household refrigeration equipment to reconsider their attitude to absorption refrigeration device (ARD), which can be considered as one of the alternative options for switching to environmentall... see more

Every plant available in the universe is not produced to be the part of biodiversity, but is also produced to obtain medicinal purposes. The medicinal value of the plant is due to the availability of various chemical compounds [1]. Since prehistoric time,... see more

Double promoted catalyst (CaO/KI/?-Al2O3) was used as the catalyst for transesterification of palm oil into biodiesel. The experiment was carried out in a batch reactor consisting  of a three-neck glass flask (500 ml capacity) equipped with a reflux ... see more

Abstrak. Penelitian ini bertujuan untuk mengekstraksi dan memunikan silika dari abu sekam padi (ASP) dan melihat karakteristik silika yang dihasilkan apabila diberi perlakuan sonikasi dan refluks. Metode yang digunakan dalam penelitian ini adalah sol-gel ... see more

Background: Diabetes mellitus has been linked to various gastrointestinal motility disorders, including gastroesophageal reflux disease (GERD).This study aimed to determine the proportion of GERD in patients with diabetes mellitus.Method: This descriptive... see more

Objective: To evaluate the value and compliance rate of voiding vesicoureteral urosonography in pediatric vesicoureteral reflux (VUR).Methods: This is a retrospective study. A total of 80 children with high-risk VUR admitted to Children’s Hospital affilia... see more

Condensers as the main equipment and heat exchangers in a combined cycle power plant have a major effect to determine combined cycle efficiency. The condenser is used to transform saturated steam into water which will be reused in a combined cycle power p... see more

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