Results 71 to 80 of about 3,649,359 (324)

Partial Discharge in Electronic Equipments [PDF]

, 2009
Tato disertační práce se věnuje studiu částečných výbojů (PD) způsobených poklesem spolehlivosti a životnosti elektronických zařízení a systémů. Diagnostika PD je dnes známá metoda pro vysoké napětí u vysoko-výkonných zařízení.
Mammadov, Anar
core  

Synchrotron heating by a fast radio burst in a self-absorbed synchrotron nebula and its observational signature

, 2016
Fast radio bursts (FRBs) are mysterious transient sources. If extragalactic, as suggested by their relative large dispersion measures, their brightness temperatures must be extremely high. Some FRB models (e.g.
Dai, Zi-Gao, Yang, Yuan-Pei, Zhang, Bing
core   +1 more source

EFFECT OF EXTREMELY HIGH FREQUENCY ELECTROMAGNETIC IRRADIATION TREATMENT ON GERMINATION, GROWTH AND AMYLASE ACTIVITY OF WHEAT SEEDS [PDF]

, 2023
Gayane Poghosyan, Marieta S. Mikaelyan, P. O. Vardevanyan   +2 more
openalex   +1 more source

A Comparative Study of Cerebral Oxygenation During Exercise in Hemodialysis and Peritoneal Dialysis Patients

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Cognitive impairment and exercise intolerance are common in dialysis patients. Cerebral perfusion and oxygenation play a major role in both cognitive function and exercise execution; HD session per se aggravates cerebral ischemia in this population. This study aimed to compare cerebral oxygenation and perfusion at rest and in mild
Marieta P. Theodorakopoulou, Konstantina Dipla, Danai Faitatzidou, Fotini Iatridi, Areti Georgiou, Artemios Karagiannidis, Erasmia Sampani, Chrysostomos Dimitriadis, Aggelos Koutlas, Andreas Zafeiridis, Pantelis Sarafidis   +10 more
wiley   +1 more source

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

FEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Single center experience with first-intention high-frequency jet vs. volume-targeted ventilation in extremely preterm neonates

Frontiers in Pediatrics
ObjectivesTo examine whether first-intention high-frequency jet ventilation (HFVJ), compared to volume-targeted ventilation (VTV), in extremely preterm infants is associated with lower incidence of bronchopulmonary dysplasia (BPD) and other adverse ...
Dimitrios Rallis, Dimitrios Rallis, Danielle Ben-David, Kendra Woo, Jill Robinson, David Beadles, Laura Bernardini, Elisa Abdulhayoglu, Elizabeth Flanigan, Helen Christou   +9 more
doaj   +1 more source

Photonic Crystal Cavities and Waveguides [PDF]

, 2001
Recently, it has also become possible to microfabricate high reflectivity mirrors by creating two- and three-dimensional periodic structures. These periodic "photonic crystals" can be designed to open up frequency bands within which the propagation of ...
Dapkus, D., Kim, I., Loncar, M., Painter, O., Pearsall, T., Scherer, A., Vuckovic, J., Yoshie, T.   +7 more
core  

Measuring and assessing the effects of extremely low-frequency electromagnetic fields (ELF-EMF) on blood parameters and liver enzymes of personnel working in high voltage power stations in a petrochemical industry [PDF]

, 2023
Soode Moslemi, Mohammad Reza Ghotbi Ravandi, Sajad Zare, Hamidreza Tohidi Nik   +3 more
openalex   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

FEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin, Tingting Chen, James A. Letts   +2 more
wiley   +1 more source

Evaluating tidal volume stability in extremely preterm infants on high-frequency oscillatory ventilation with volume guarantee

BMC Pediatrics
Background High Frequency Oscillatory Ventilation (HFOV) combined with volume guarantee (HFOV-VG) represents an innovative ventilation mode designed for managing respiratory failure in neonates.
Saleh S. Algarni, Omar M. Almutairi, Mohammed Sufyani, Saad Alshreedah, Naif Alotaibi, Sami S. Alanazi, Abeer H. Alharthi, Ibrahim Alanazi, Abadi Ghazwani, Ibrahim Ali, Abdulaziz Homedi, Saif Alsaif, Kamal Ali   +12 more
doaj   +1 more source