The role of dynamics in heterogeneous catalysis: Surface diffusivity and N decomposition on Fe(111).

Dynamics has long been recognized to play an important role in heterogeneous catalytic processes. However, until recently, it has been impossible to study their dynamical behavior at industry-relevant temperatures. Using a combination of machine learning potentials and advanced simulation techniques, we investigate the cleavage of the N[Formula: see text] triple bond on the Fe(111) surface.

Programmable catalysis by support polarization: elucidating and breaking scaling relations.

The Sabatier principle and the scaling relations have been widely used to search for and screen new catalysts in the field of catalysis. However, these powerful tools can also serve as limitations of catalyst control and breakthrough. To overcome this challenge, this work proposes an efficient method of studying catalyst control by support polarization from first-principles.

Unusual Intraventricular Bullet Migration During Operation: A Case Report on Treatment Strategies.

Gunshot head injuries are increasingly prevalent in the urban setting and carry complex technical and clinical decision-making challenges to practicing neurosurgeons. Here, we present a unique case of a patient who suffered a gunshot injury and presented to the emergency department with an intraventricular bullet lodgment without significant neurological deficits. The patient was rushed to the operating room to remove the bullet after neuroimaging demonstrated its migration inside the ventricular system.

Change in the Nature of ZSM-5 Zeolite Depending on the Type of Metal Adsorbent-The Analysis of DOS and Orbitals for Iron Species.

Transition-metal-modified zeolites have recently gained the greatest interest among scientists. Ab initio calculations within the density functional theory were used. The exchange and correlation functional was approximated with the Perdew-Burke-Ernzerhof (PBE) functional.

Dynamic touch induces autonomic changes in preterm infants as measured by changes in heart rate variability.

Preterm birth significantly increases the risk of developing various long-term health problems and developmental disabilities. While touch is a crucial component of many perinatal care strategies, the neurobiological underpinnings are rarely considered. C-tactile fibers (CTs) are unmyelinated nerve fibers that are activated by low-force, dynamic touch.

Newborns' clinical conditions are correlated with the neonatal assessment manual scorE (NAME).

Objective: To investigate the relationship between the Neonatal Assessment Manual scorE (NAME) and newborns' clinical condition on a large number of infants. The NAME model was developed as an instrument to assess the infant's general conditions, especially in NICUs, by evaluating how the infant's body responds to an external stressor such as static touch. Previous studies, employing experienced assessors, showed good validity indices as well as high inter-rater reliability.

The Evolution of the Ammonia Synthesis Catalyst 'AmoMax®-CASALE'.

Despite the Haber-Bosch process being more than 100 years old, only incremental improvements have been achieved until recently. Now, by combining the catalyst expertise of CLARIANT and the engineering knowledge of CASALE, a breakthrough has been realized. AmoMax®-Casale is a new ammonia synthesis catalyst jointly developed by Casale and Clariant particularly for use in Casale ammonia converters.

Osteopathic Manipulative Treatment Regulates Autonomic Markers in Preterm Infants: A Randomized Clinical Trial.

Osteopathic manipulative treatment (OMT) has been found to be effective in the context of premature infants. Nonetheless, no studies have investigated the immediate effects of OMT on heart rate variability (HRV). As altered HRV reflects poor or worsening newborn's clinical conditions and neurodevelopment, should OMT improve HRV fluctuations, it could become a relevant intervention for improving the care of preterm newborns.

The Neonatal Assessment Manual scorE: A Reliability Study on Hospitalized Neonates.

Despite clinical improvements in neonatal intensive care units (NICUs), prematurity keeps causing several comorbidities. To enhance the management of such conditions, in previous studies we devised the Neonatal Assessment Manual scorE (NAME) model, a structured touch-based assessment that aims to evaluate how newborns respond to gentle touch-based stimuli. The present study aimed to begin assessing the NAME interrater reliability and specific agreements.

The neonatal assessment manual score (NAME) for improving the clinical management of infants: a perspective validity study.

Background And Objectives: The Neonatal Assessment Manual scorE (NAME) was developed to assist in the clinical management of infants in the neonatal ward by assessing their body's compliance and homogeneity. The present study begins its validation process.

Methods: An expert panel of neonatal intensive care unit (NICU) professionals investigated the NAME face and content validity.

Neonatal Assessment Manual Score: Is There a Role of a Novel, Structured Touch-Based Evaluation in Neonatal Intensive Care Unit?

Despite the technological improvements in monitoring preterm infants in the neonatal intensive care unit, routine care in the neonatal ward is primarily based on manual procedures. Although manual clinical procedures play a critical role in neonatology, little attention has been paid to palpation as a clinical assessment tool. Palpation is a clinical evaluation tool that relies mostly on the senses of touch and proprioception.

Hydrothermal extraction of hemicellulose: from lab to pilot scale.

A flow-through reactor for hemicelluloses extraction with hot pressurized water was scaled with a factor of 73. System performance was evaluated by comparing the temperature profile, extraction yield and kinetics of the two systems, performing experiments at 160 and 170°C, 11barg for 90min, using catalpa wood as raw material. Hemicellulose yields were 33.

Palliative care in poor-performance status small cell lung cancer patients: is there a mandatory role for chemotherapy?

Purpose: Small cell lung cancer (SCLC) is an aggressive malignancy but with a high response rate to chemotherapy. Eastern Cooperative Oncology Group performance status (ECOG PS) has been recognized as one of the main prognostic factors in SCLC. There are few data about risk-benefit ratio of chemotherapy over exclusive best supportive care in ECOG PS 3 and 4 patients.

[Lipoid pneumonia].

Lipoid pneumonia (LP) is a pneumonitis resulting from the aspiration of lipids, and is commonly associated with the use of mineral oil as a laxative. LP is relatively unfamiliar to clinicians and is probably underdiagnosed. Making a diagnosis of LP requires a high degree of clinical suspicion.

[Transbronchial needle aspiration of hilar and mediastinal lymph nodes].

Background: Besides clarifying the etiology of unidentified lymphadenomegaly, puncturing hilar and mediastinal lymph nodes by a flexible bronchoscopic needle is an aid in diagnosing and staging broncho- genic cancer or other metastatic cancers.

Objective: Our study had the principal objective to evaluate the positivity of transbronchial needle aspiration (TBNA).

Method: We evaluated retrospectively the effectiveness of all TBNA done in 74 consecutive patients.

Off-pump coronary artery bypass grafting without mechanical stabilization in minipericardiotomy.

Stabilization and exposure of coronary vessels in off-pump bypass grafting is achieved by means of different and expensive mechanical stabilizers. We describe a new technique of stabilization and exposure of target vessels by using only a 'double suspension-stabilization stitch' without the support of mechanical stabilizers. In accomplishing left anterior descending and right coronary artery off-pump bypass grafting, this technique has resulted in a good hemodynamic stability, in no epicardial damage and surgical trauma, and finally it represents a costless procedure.

Phase II trial of neoadjuvant chemotherapy using alternating doublets in non-small-cell lung cancer.

Purpose: Lung cancer is an epidemic disease in developing countries. Incorporation of new active drugs in the neoadjuvant treatment of operable patients might lead to improved outcomes. Postchemotherapy mediastinal-based treatment decisions allow for in vivo testing of activity and could help to determine the ideal local treatment.

Combined minimally invasive coronary bypass surgery and left pulmonary lobectomy.

Two patients underwent combined heart and lung surgery performed through a limited left anterior thoracotomy. Good exposure of the left pulmonary hilum and the left anterior descending artery was obtained, allowing left upper lobectomy combined with off-pump coronary bypass grafting. This approach avoids potential complications due to sternotomy, staged operations, and cardiopulmonary bypass.

Predictive factors of hyperlipidemia in HIV-infected subjects receiving lopinavir/ritonavir.

We studied 382 multiexperienced HIV-infected patients followed up for > or =3 months after starting lopinavir/ritonavir (LPV/r) to identify the factors predicting hypertriglyceridemia and high non-HDL cholesterol levels (triglycerides > or =200 mg/dl and/or non-HDL cholesterol > or =190 mg/dl) after 6 and 12 months of LPV/r exposure. The predictors of hypertriglyceridemia were higher baseline triglyceride levels [OR: 2.28 (95% CI: 1.

Use of lopinavir/ritonavir in HIV-infected patients failing a first-line protease-inhibitor-containing HAART.

Objectives: The long-term virological efficacy of lopinavir/ritonavir-containing highly active antiretroviral therapy (HAART) in HIV-infected patients failing a first-line protease inhibitor (PI)-based regimen is still unclear.

Methods: An observational study was carried out from December 2000-December 2002 on 111 consecutive patients starting lopinavir/ritonavir. The primary end-point was virological success (HIV RNA <50 copies/mL in two consecutive determinations).

Off-pump coronary artery bypass grafting without mechanical stabilization in minipericardiotomy: a preliminary experience.

We describe a new off-pump coronary bypass technique, the "double suspension-stabilization stitch", performed without the support of mechanical stabilizers. This technique is very cheap and yields good hemodynamic stability, with no epicardial damage.

The endogeneous formation of highly chlorinated tetrahydro-beta-carbolines as a possible causative mechanism in idiopathic Parkinson's disease.

The causative interrelationship between long-term, low level exposure to chlorinated volatile organic solvents (VOSs) and neurodegenerative diseases (polyneuropathy, encephalopathy) are still an issue of controversial debate. Endogeneously formed chlorinated tetrahydro-beta-carbolines found by Bringmann 1995 (TaClo hypothesis) may contribute, in particular, to the development of (idiopathic) Parkinson's disease (PD) in the presence of the sufficient amount of trichloroacetaldehyde, an intermediate in metabolism of trichloroethylene (TRI). Long-term storage of specific VOSs over years, evident frrom exhalation pattern during the postexposure period, may serve as a promoting factor to form continuously TaClo non-enzymatically from tryptamine and trichloroacetaldehyde.

Continuous lumbar plexus block: Use of radiography to determine catheter tip location.

Background And Objectives: The purpose of this article is to document where a lumbar plexus catheter introduced by the posterior approach will track and to evaluate the benefit of using systematic radiographic verification of catheter placement.

Methods: A continuous lumbar plexus block (CLPB) by the posterior approach was performed on 169 consecutive adult patients scheduled for major hip, thigh, or knee surgery. Each catheter was verified by radiography using 10 mL contrast medium.

Comparison of low-dose dobutamine ventriculography with low-dose dobutamine echocardiography for predicting regional improvement in left ventricular function after coronary artery bypass grafting.

The demonstration of a contractile reserve during low-dose dobutamine echocardiography (LDDE) identifies viable myocardium and predicts recovery of left ventricular (LV) function after myocardial revascularization in patients with chronic coronary artery disease. However, a technically difficult transthoracic visualization may limit the use of LDDE, thus requiring an alternative diagnostic procedure. The present study compares LDDE with low-dose dobutamine ventriculography (LDDV) in predicting an improvement in regional LV function after surgical revascularization.