Test printed circuit test boards (PCBs) with various surface finishes were subjected to a mixed flowing gas environment with gaseous composition adjusted to achieve a targeted 500600 nm/day copper corrosion rate. Board surface finishes included immersion silver (ImAg), organic solderability preservative (OSP) and lead-free hot-air-solder leveling (Pbfree HASL). The PCB test specimens were prepa...

Histamine H3 receptor subtype has been the target of several recent drug development programs. Quantitative structure-activity relationship (QSAR) methods are used to predict the pharmaceutically relevant properties of drug candidates whenever it is applicable. The aim of this study was to compare the predictive powers of three different QSAR techniques, namely, multiple linear regression (MLR)...

To document more fully the applicability of the air monitoring data used in the site profile, NIOSH will add a section to the profile to address the quality, reliability and applicability of the early Atomic Energy Commission (AEC) air sampling program to the estimation of worker doses. Further, NIOSH will discuss how these measurements were consistent with the recommendations provided in ICRP ...

A long-standing debate in cognitive neuroscience pertains to the innate nature of language development and the underlying factors that determine this faculty. We explored the neural correlates associated with language processing in a unique individual who is early blind, congenitally deaf, and possesses a high level of language function. Using functional magnetic resonance imaging (fMRI), we co...

Over the years, the hot air solder leveling (HASL) process has been established as a primary surface finish for circuit boards. It still remains the most solderable, and arguably the most durable, surface finish. Recent developments in PCB manufacturing have highlighted some problems with these finishes, creating an urgent need for solderable, durable, and inexpensive alternative surface finish...

Salah satu karakteristik dari kebijakan Kurikulum Merdeka adalah memberikan kebebasan bagi guru untuk mengembangkan alur pembelajaran dan materi ajar. Hal tersebut ditujukan menciptakan yang bermakna kontesktual dengan kehidupan sehari-hari siswa. Penelitian ini bertujuan mendesain bahasa Indonesia searah literasi kemaritiman. Pengembangan menggunakan model Dick and Carrey. Hasl desain menunjuk...

histamine h3 receptor subtype has been the target of several recent drug development programs. quantitative structure-activity relationship (qsar) methods are used to predict the pharmaceutically relevant properties of drug candidates whenever it is applicable. the aim of this study was to compare the predictive powers of three different qsar techniques, namely, multiple linear regression (mlr)...

Teknologi saat ini memiliki kemajuan yang sangat baik salah satunya adalah dengan adanya berbagai macam komunikasi sering kita gunakan. Hal di dukung perkembangan internet cepat seluruh dunia. Internet merupaka satu teknologi dapat memberikan kemudahan bagi setiap penggunaanya. Kehadiran memudahkan orang dalam melakukan Dengan menggunakan komunitas virtual dan neatspeak aplikasi gunakan instagr...