From a P-Bridging Phosphaketene to μ-Phosphinidenide and μ-Diphosphaurea Units at a Dinickel Core.

Salt metathesis of dinickel(II) complex LNiBr (1; L is a dinucleating pyrazolate ligand with two β-diketiminato chelate arms) with Na(OCP) ⋅ (dioxane) yielded LNi(PCO) (2) with a P-bridging phosphaethynolate. Further reaction of 2 with benzyl isocyanide or with an N-heterocyclic carbene (NHC) triggered decarbonylation and gave LNi(PCN-CHPh) (3) and LNiP(NHC) (4) with P-bridging cyanophosphide and NHC-phosphinidenide, respectively. Electronic structure analysis indicated a μ-η : η binding mode of the PCO anion between the two Ni ions in 2, which is even more pronounced for the [PCN(-CHPh)] anion in 3.

A new double multiplication region method to design high sensitivity and wide spectrum SPADs in standard CMOS technologies.

Designing SPADs with high sensitivity in a wide wavelength range is crucial since the applications utilizing SPAD-based sensors target different parts of the spectrum. Here, we introduce a novel technique to achieve a wider sensitivity spectrum through the insertion of a second multiplication region into the depletion region. Thanks to the proposed method, at 5.

Evaluation of Patients with COVID-19 Followed Up in Intensive Care Units in the Second Year of the Pandemic: A Multicenter Point Prevalence Study.

Objective: A 1-day point prevalence study was planned to obtain country data by determining the clinical characteristics, follow-up and treatment methods of coronavirus disease 2019 (COVID-19) cases that required intensive care unit (ICU) treatment in the second year of the pandemic.

Material And Methods: All patients who were hospitalized in the ICUs due to COVID-19 between March 11, 2022, 08.00 am, and March 12, 2022, 08.

The Effect of Health Literacy on Preoperative Anxiety Levels in Patients Undergoing Elective Surgery.

Objective: This study aimed to determine preoperative anxiety levels, their associated factors, and the relationship between health literacy and preoperative anxiety in adult patients undergoing elective surgery.

Materials And Methods: This descriptive cross-sectional study was conducted in a tertiary hospital between December 21, 2021, and June 20, 2022, and included 466 adult patients. Participants were administered the demographic data and basic health status form, Health Literacy Scale (HLS), and Beck Anxiety Inventory (BAI).

Factors influencing neonatal outcomes in twin pregnancies undergoing cesarean section: a cross-sectional study.

Objective: This study aimed to evaluate maternal and fetal characteristics and factors affecting fetal outcomes in twin pregnancies delivered by cesarean section.

Methods: This was a cross-sectional study in a tertiary care referral hospital. The primary outcome was to ascertain the effects of independent factors on the 1st and 5th minute APGAR scores, neonatal intensive care unit admissions, the need for mechanical ventilation, and neonatal mortality.

Achieving Control over the Reduction/Coupling Dichotomy of N by Boron Metallomimetics.

We report a detailed computational and experimental study of the fixation and reductive coupling of dinitrogen with low-valent boron compounds. Consistent with our mechanistic findings, the selectivity toward nitrogen fixation or coupling can be controlled through either steric bulk or the reaction conditions, allowing for the on-demand synthesis of nitrogen chains. The electronic structure and intriguing magnetic properties of intermediates and products of the reaction of dinitrogen with borylenes are also elucidated using high-level computational approaches.

Salubrinal Ameliorates Inflammation and Neovascularization via the Caspase 3/Enos Signaling in an Alkaline-Induced Rat Corneal Neovascularization Model.

Ocular alkaline burn is a clinical emergency that can cause permanent vision loss due to limbal stem cell deficiency and corneal neovascularization (CNV). Although the basic pathogenetic mechanisms are considered to be acute oxidative stress and corneal neovascularization triggered by inflammation, the underlying intracellular mechanisms have not been clearly elucidated. The aim of this study was to investigate the role of endoplasmic reticulum (ER) stress on inflammation and neovascularization, and the effect of the ER stress inhibitor salubrinal (SLB), as a novel treatment in a corneal alkaline burn model in rats.

Factors affecting extubating time of postoperative patients who underwent congenital cardiac surgery: a randomized prospective study.

Objective: Anesthesia management in pediatric cardiac surgery using health resources sparingly focuses on reducing morbidity and mortality and increasing patients' quality of life. The duration of postoperative mechanical ventilation (MV) heavily influences pediatric cardiac surgery recovery. Thus, in this study we aimed to determine factors influencing extubation times after pediatric cardiac surgery.

Siemens Reloaded: Chloride-Assisted Selective Hydrodechlorination of SiCl to HSiCl.

Trichlorosilane is the key intermediate for the large-scale production of polycrystalline silicon in the Siemens and Union Carbide processes. Both processes, however, are highly inefficient, and over two thirds of the trichlorosilane employed is converted to unwanted silicon tetrachloride accumulating in millions of tons per year on a global scale. In this combined experimental and theoretical study we report an energetically and environmentally benign synthetic protocol for the highly selective conversion of SiCl to HSiCl using organohydridosilanes as recyclable hydrogen transfer reagents in combination with onium chlorides as efficient catalysts.

Intraoperative hyperoxygenation may negatively affect postoperative cognitive functions in coronary artery bypass graft operations: A randomized controlled study.

Objective: In this study, it was aimed to compare various parameters during surgery and postoperative cognitive functions in patients undergoing coronary artery bypass graft (CABG) surgery using different levels of perioperative oxygen.

Methods: One hundred patients scheduled for elective CABG surgery were included in the study. The patients were divided into two groups according to arterial oxygen levels during surgery.

Postoperative infection-related mortality and lymphocyte-to-C-reactive protein ratio in patients undergoing on-pump cardiac surgery: a novel predictor of mortality?

Objective: This study aims to investigate the relationship between postoperative infection-related mortality and lymphocyte-to-C-reactive protein ratio (LCR), a newly defined parameter with the combination of inflammatory and immune parameters, in patients undergoing cardiac surgery.

Patients And Methods: Between January 2016 and November 2021, 236 patients who underwent on-pomp cardiac surgery with median sternotomy and developed postoperative infection were analyzed retrospectively. Patients were divided into six groups according to the types of postoperative infection.

Pumping between phases with a pulsed-fuel molecular ratchet.

The sorption of species from a solution into and onto solids underpins the sequestering of waste and pollutants, precious metal recovery, heterogeneous catalysis, analysis and separation science, and other technologies. The transfer between phases tends to proceed spontaneously in the direction of equilibrium. For example, alkyl ammonium groups mounted on silica nanoparticles are used to chemisorb cucurbituril macrocycles from solution through host-guest binding.

Scedosporium apiospermium keratitis: a case report.

Background: Scedosporium apiospermum, an opportunistic and filamentous fungus, is a rarely seen ocular entity that is difficult to identify and heal. We report a challenging case of S. apiospermium keratitis and discuss the treatment modalities in light of previous studies.

Effect of Fresh Gas Flow Rate on Thiol/Disulphide Hemostasis and Ischemia-modified Albumin in Laparoscopic Cholecystectomy.

Objective: To investigate the effects of low-flow and high-flow anesthesia techniques, administered with sevoflurane during laparoscopic cholecystectomy, on thiol/disulphide homeostasis and serum ischemia-modified albumin (IMA) levels.

Study Design: Double-blind, randomised study.

Place And Duration Of Study: Department of Anesthesiology and Reanimation, Health Science University, Bursa Yuksek Ihtisas Training and Education hospital, Bursa, Turkey from January to October 2020.

The Possible Protective Effect of Boric Acid in an Alkaline-Induced Corneal Neovascularization Rat Model.

It is known that boric acid (BA) exerts it antioxidant and anti-inflammatory effects by activating the activating transcription factor 4 (ATF4) and nuclear factor-erythroid 2-related factor 2 (Nrf2) pathway. This pathway has been reported to control antioxidant status in the eye. The aim of this study was to investigate the possible preventive effects of boric acid administration on oxidative damage and corneal neovascularization (CNV).

The effect of longstanding silicone oil on retina choroid and optic nerve in eyes with retinal detachment: an optical coherence tomography study.

Background: The study aims to evaluate peripapillary retinal nerve fiber layer thickness (RNFL-T), central macular thickness (MT), choroidal thickness (CT), and thickness of each retinal layer after automatic segmentation in patients who underwent retinal detachment (RD) repair with longstanding silicone oil tamponade.

Methods: We enrolled 33 patients who underwent complicated primary rhegmatogenous RD surgery and followed up with a long-term silicone tamponade were included in this retrospective comparative (case-control) study. RNFL-T, CT, and thickness of each retinal layer after automatic segmentation analysis were measured after the longstanding silicone removal surgery.

Fourier analysis of corneal Scheimpflug imaging: clinical use in keratoconus.

Aim: To evaluate the clinical use of Fourier analysis of videokeratography data in the diagnosis and follow-up of keratoconus (KC).

Methods: We conducted a chart review of consecutive patients presented to our cornea clinic. A team of two experienced cornea specialists divided the patients into three groups: normal cornea, forme fruste KC (FFKC), and clinical KC.

Comparison of obstructive sleep apnea syndrome and keratoconus patients on elevation maps.

Purpose: This study aimed to compare the tomographic features of the cornea on elevation maps between obstructive sleep apnea syndrome (OSAS) and keratoconus (KC) patients and to investigate the presence of susceptibility to ectatic corneal diseases in OSAS patients.

Design: This is a comparative cross-sectional case-control study.

Methods: This study included 84 eyes of 42 patients diagnosed with severe OSAS using polysomnography (apnea/hypopnea index > 30), 84 eyes of 56 patients diagnosed with keratoconus, and 84 eyes of 42 healthy subjects as control group and evaluated in three groups.

Optical Coherence Tomography Angiography in Patients with Cone Dystrophy.

Purpose: This study aimed to evaluate macular perfusion using optical coherence tomography angiography (OCTA) in patients with cone dystrophy and to determine the associations between the quantitative data of OCTA and functional parameters.

Methods: The data of 36 eyes of 18 patients with cone dystrophy and 38 eyes of 19 healthy controls were analyzed. The superficial and deep capillary plexus (SCP and DCP) vessel densities (VD) of the macula, the foveal avascular zone (FAZ) and choriocapillary flow density values were obtained using OCTA.

Impact of obstructive sleep apnea on clinical outcomes in patients hospitalized with COVID-19.

Purpose: Data from large patient registry studies suggested an increased incidence and increased mortality in coronavirus disease-2019 (COVID-19) in patients with a history of obstructive sleep apnea (OSA). This study aimed to compare the prevalence of OSA in patients with and without COVID-19 among patients admitted to the same hospital in the same time period. In addition, the impact of OSA on clinical outcomes of COVID-19 infection was investigated.