REDUCED FRICTION AND EXCELLENT ANTI-WEAR PERFORMANCE OF QBE2 BERYLLIUM BRONZE AGAINST 38CRMOALA STEEL IN PNEUMATIC DOWNHOLE MOTOR UNDER GREASE LUBRICATION

To improve the service life of the newly designed pneumatic downhole motor, a kind of commercially available lithium complex grease was used to help avoid the rapid wear-induced failure of the dynamic seal of pneumatic bluelight downhole tools in operation.The investigation on the tribological behaviors of QBe2 beryllium bronze and 38CrMoAlA steel

Abstract To examine the effects of short duration stress management training (SMT) on self-perceived depression, anxiety and stress in male automotive assembly workers, 118 male automotive workers from Pekan, Pahang (n = 60, mean age = 40.0 years, SD = 6.67) and Kota Bharu, Kelantan (n = 58, mean age = 38.1 years, SD = 5.86) were assigned to experi

Artikel ini berpendapat bahwa konsep damai sangat relevan dalam perspektiflslam yang dapat dilacak melalui tiga pandangan.Pertama, secara ontologi, manusia harus damai untuk muslihun (perbaikan) dan mukmin (rasa persaudaraan).Kedua, secara epistemologi, upaya damai dilakukan melalui tiga cara yaitu perdamaian, rekonsiliasi dan pengampunan, dan perj

Cellular senescence is a state of stable cell cycle arrest that can be triggered in response to various insults and is characterized by distinct morphological hallmarks, gene expression profiles, and the senescence-associated secretory phenotype (SASP).Importantly, cellular senescence is a key component of normal physiology with tumor suppressive f