bluuebunny/crossref_metadata_2025_split huggingface dataset:
Distribution of Organic Matter in the Particle Size Fractions of Lateritic Soil (Plinthosol)
Authors: Brogowski Zygmunt , Kwasowski Wojciech 
Published: February 2013

Abstract
The distribution of organic matter in the genetic horizons of lateritic soil within a 100-cm profile to the basaltic parent rock is almost except for horizon Ap. Assuming that the sum of organic matter in 100 cm of the soil profile is 100%, 25.7% of these compounds occur in horizon Ap, whereas in the remaining horizons this value varies within 18-19.2%. In all size fractions, except the clay fraction in diameter of <0.002 mm, the content of organic matter decreases to a certain depth, and increases again in the deepest horizon located directly on the solid basaltic rock. The clay fraction displays an opposite trend; the content of organic matter in them increases with depth. In the horizon at the depth of 60-80 cm, the clay fraction <0.002 mm accumulates half of the total sum of organic compounds of all the remaining fractions. Such distribution of organic matter in soil and among its particle size probably results from the character of the basaltic weathered debris, as well as climate and vegetation covering the studied area.
The Stock of Organic Carbon in Forest Soils in Phytocenosis of the Continental Mixed Coniferous Forest in Kampinos National Park
Authors: Kondras Marek , Czępińska-Kamińska Danuta , Sienicka Paulina , Otręba Anna , Torzewski Karol , Oktaba Lidia 
Published: February 2013

Abstract
In this study physical and chemical analyses of soils were conducted in four areas of the habitat fresh mixed coniferous forest typical of the Kampinos National Park (20% forest area KPN). An attempt was made to evaluate the stock of organic carbon in every genetic horizon and the whole profiles of selected soils, and one counted the indicator ITGL (FSTI - Forest Soil Trophizm Index). In the examined soils, the particle size distributions, the content and ability to store organic carbon was analyzed as well as the amount of total nitrogen, C:N ratio, soil reaction and sorption properties. The highest content and stock of organic carbon was noted in the Brunic Arenosol (Distric) Postagricultural. In the investigated soils, the reserve of the organic carbon is accumulated in almost equal proportional shares, dividing soil into horizontal organic and mineral parts.
Morphology of the intervertebral foramen: a direct relation with low back pain
Authors: Iliescu Madalina , Bordei P. , Albina Sandica , Ionescu C. 
Published: February 2013

Abstract
Low back pain is today a remarkably serious problem, not only in terms of health, but also socially and populationally, and it is, in most developed countries, a leading cause of disability. By its morphological features, the intervertebral foramen turns out to be the key in trying to manage the pathology of lumbar spinal region. We evaluated morphometrically the lumbar intervertebral foramen on 70 isolated lumbar vertebrae and 11 spinal blocks; the latter were sectioned to obtain easy access to components and dimensional values able to provide additional results, considered statistically and compared with literature. The results, presented in tables and graphics, are discussed in relation with actual literature.
Medical causes of acute kidney injury- clinical and therapeutic aspects in constanta county
Authors: Tuta Liliana , Stanigut Alina , Campineanu B. 
Published: February 2013

Abstract

Introduction. Acute kidney injury represents an important clinical syndrome within nephrology, approximately 5% of hospitalised patients being affected. Establishing a diagnosis for acute kidney injury can be challenging and requires many steps. A complete and correct diagnosis is essential for appropriate therapy and, ultimately, the patient’s prognosis.

Methods. An objective of this study is to determine the presentation of certain characteristics for the diagnosis of acute kidney injury. It is also intended to show the therapeutic methods undertaken for patients presenting with acute kidney injury, as well as evolution under therapy.

Results. The most common causes of acute kidney injury were medical causes and within that category, cardiovascular diseases were the most common etiological factor (18%). Nephropathies represented a minority, with acute pyelonephritis, responsible for 5% of medical causes, and acute glomerulonephritis accounting for 6%. Hemodialysis was initiated only in 15% of patients. The rest of the patients were treated conservatively and responded favourably to this therapeutic approach. The etiological factors that had the greatest number of patients requiring hemodialysis were Rifampicin administration and leptospirosis (~20% each).

Conclusions. The clinical characteristics of acute kidney injury are variable and are usually specific to the etiology of the disease. The most common causes were cardiovascular diseases (18%). The therapeutic approach was rather conservative. Hemodialysis was instituted only in 15% of the patients. Almost 5% of all patients evolved to chronic kidney disease in a variable period of time, and the overall mortality was 18%, mainly due to infections and cardiovascular complications.
Effects of photoperiod on body size and hormone titres relating to diapause regulation inCotesia vestalis(Hymenoptera: Braconidae)
Authors: Hao Zhong-Ping , Zhao Yan-Qun , Yuan Zhong-Qin , Shi Zu-Hua 
Published: February 2013

AbstractPhotoperiods influence diapause beyond the maternal generation inCotesia vestalis(Haliday) (Hymenoptera: Braconidae). The sizes, 20-hydroxyecdysone (20E), and juvenile hormone III (JH III) contents in the G1diapausing prepupae, G0nondiapausing prepupae, adults, and G1eggs fromC. vestaliscultures reared under three photoperiods (8:16 hours light:dark, 12:12 hours light:dark, and 16:8 hours light:dark) were measured to investigate the hormones’ roles on maternal information transmission and diapause regulation. Results showed that the body size of G1diapausing prepupae was significantly larger than that of G0nondiapausing prepupae. The sizes of G0prepupae, female abdomens, and G1eggs under eight-hour light were significantly larger than those under 16-hour light. The 20E content in diapausing prepupae was significantly lower than that in nondiapausing prepupae, whereas JH III content did not show significantly difference under the same photoperiod. The 20E content in maternal prepupae, mated females and G1eggs decreased as the light period was reduced. Juvenile hormone III contents in G0-mated females and G1eggs (after oviposition) under three photoperiods showed no significant differences. These findings suggest that 20E may play a critical role in diapause regulation ofC. vestalis, and be used as a maternal environmental message to be transmitted to the next generation.
Role of Secretin-Enhanced Magnetic Resonance Cholangiopancreatography in the Evaluation of Patients Following Pancreatojejunostomy
Authors: Anis Munazza , Mortele Koenraad 
Published: February 2013

Objective:

This study was conducted to assess the role of secretin-enhanced magnetic resonance cholangiopancreatography (S-MRCP) in the evaluation of patients following pancreatico-jejunal anatomosis.

Materials and Methods:
S-MRCP studies (n = 83) performed at Brigham and Women's Hospital between 1/2005 and 7/2005 were retrospectively reviewed. Among these, there were 13 patients (10 females, 3 males; mean age = 45 years, range = 18-74 years) who were evaluated with S-MRCP following pancreatojejunal anatomosis. Single-shot fast spin-echo T2-weighted thick slab dynamic MRCP images obtained before and every minute (for 10 min) after IV injection of secretin (2 mcg/kg body weight of SecreFloTM IV over 1 min) were reviewed retrospectively and independently by 3 readers. Image analysis included measurement of the main pancreatic duct (MPD) diameter and subjective assessment of the grade of visualization of the MPD remnant. The amount of jejunal fluid and visualization of the pancreatico-jejunal anatomosis pre-and post-secretin were also documented. Direct correlation with endoscopic retrograde cholangiopancreatography (ERCP) finding was available in six of the 13 cases.

Results:
The MPD diameter and MPD remnant visualization improved post-secretin for 1/3 readers. The number of pancreatico-jejunal anastomoses and the amount of jejunal fillings pre-and post-secretin was seen to improve significantly for 1 of the 3 readers. For Reader 1, the mean MPD diameter in the body of the pancreas, on the pre-and post-secretin image, was 3.2 ± 1.3 mm and 3.8 ± 1.9 mm, respectively. There was no statistical difference in the values pre- and post-secretin in the MPD diameter (P = 0.07), MPD visualization (P = 0.16) and the number of pancreatico-jejunal anastomoses seen (P = 0.125 5/13 pre- and 9/13 post-secretin). Statistical significance was seen in the amount of jejunal filling (P = 0.01) after secretin. For Reader 2, the MPD diameter pre-and post-secretin was 4 ± 2 and 3.9 ± 2.1 mm, respectively (P = 0.89). The MPD visualization (P = 0.19) and degree of jejunal filling (P = 0.7) did not improve significantly. There were 3/13 pancreatico-jejunostomy anastomoses seen pre- and 8/13 seen post-secretin (P = 0.06). The values for Reader 3 reached a statistical significance for the measurement of MPD (P = 0.032). In addition, MPD visualization (P = 0.038), the number of anastomoses seen (P = 0.016) and jejunal filling (P = 0.006) were also significantly improved.

Conclusion:
The addition of intravenous secretin to an MRCP study in the evaluation of patients following pancreatojejunal anastomosis does not significantly impact the visualization of the pancreatic duct. However, secretin may improve the assessment of the pancreatico-jejunal anastomosis.
Transesophageal Echocardiography in the Intensive Care Unit
Authors: Krishnan Sundar , Mill Dallen 
Published: February 2013

ABSTRACTManagement of shock in the intensive care unit involves advanced hemodynamic monitoring. Invasive monitoring with central venous lines and pulmonary artery catheters may be inadequate in guiding therapy and improving outcomes. Echocardiography is a reasonably-safe, minimally-invasive diagnostic technique that provides rapid bedside evaluation of ventricular filling and function. While transthoracic echocardiography is the method of choice initially, images can be suboptimal in up to a third of intensive care patients. Transesophageal echocardiography is then required to better evaluate the cause of hemodynamic instability. In addition, transesophageal echocardiography can be used to diagnose other causes of hemodynamic failure (for e.g., pericardial tamponade, pulmonary embolism and left ventricular outflow tract obstruction) and to diagnose intracardiac shunt. Echocardiography is also vital in diagnosing the cause and guiding management in patients with cardiac arrest. Specific training is required for physicians in order to achieve competence in probe insertion, completion of a comprehensive examination and interpretation of the images. In this article, we provide an overview of the indications and complications of the technique and training pathways for the intensivist, followed by transesophageal echocardiography-guided hemodynamic assessment and diagnosis of specific cardiac disorders commonly encountered in the intensive care unit.How to cite this articleKrishnan S, Mill D. Transesophageal Echocardiography in the Intensive Care Unit. J Perioper Echocardiogr 2013;1(1):4-15.
Tricuspid Valve Dilation in a Case of Ostium Secundum Atrial Septal Defect: Therapeutic Dilemmas in the Perioperative Period and a Call for Building the Evidence
Authors: Singh H , Sethumadhavan J , Jayant A 
Published: February 2013

ABSTRACT
The adult literature on managing tricuspid regurgitation (TR) in left heart disease is in evolution. Tricuspid valve repair in pediatrics, on the other hand has more or less been restricted to disease subsets, such as children developing TR secondary to right ventricular disease or tricuspid valve anomalies. The pediatric literature on ‘acquired’ TR [as in congenital heart diseases, such as atrial septal defect (ASD)] is sparse. Some of the concerns that need to be addressed are thresholds for intervention, optimal annular reduction and methods of surgical reduction (DeVega vs ring annuloplasty). We present a case of a 5 years old female child who primarily presented for closure of her ostium secundum ASD. However, intraoperative transesophageal echocardiography (TEE) revealed TR and a tricuspid annular dimension beyond z +3 for her size. The surgeon chose to perform a DeVega annuloplasty and both the ASD closure and the annuloplasty were uneventful, postoperative TEE revealed no residual defect, no TR or stenosis. We seek to highlight this case in order to urge a more systematic study of such patients with a local focus since patients in our country present later than usual with asymptomatic heart disease and are more likely to undergo progressive right heart enlargement for a given shunt.

How to cite this article
Sethumadhavan J, Singh H, Jayant A. Tricuspid Valve Dilation in a Case of Ostium Secundum Atrial Septal Defect: Therapeutic Dilemmas in the Perioperative Period and a Call for Building the Evidence. J Perioper Echocardiogr 2013;1(1):24-26.
Incidentally Detected Coronary Artery Fistula Detected on Routine Perioperative Transesophageal Echocardiography
Authors: Shivaprasad BM , Subash S , Jayant A 
Published: February 2013

ABSTRACT
Coronary artery fistulae (CAF) are rare anomalies. Herein, we describe the use of intraoperative transesophageal echocardiography (TEE) in the diagnosis and management of CAF. A 3-year-old child diagnosed to have ostium secundum atrial septal defect (OS ASD) was posted for surgical closure under cardiopulmonary bypass (CPB). Post procedure TEE revealed a single continuous turbulent jet toward right atrium near the lateral wall of tricuspid region and was diagnosed as CAF communicating right coronary artery and right atrium. Surgical ligation of the CAF under CPB was done and the child was discharged postoperatively without complications. This case highlights the utility of intraoperative TEE in the diagnosis and management of CAF.

How to cite this article
Subash S, Shivaprasad BM, Jayant A, Puri GD. Incidentally Detected Coronary Artery Fistula Detected on Routine Perioperative Transesophageal Echocardiography. J Perioper Echocardiogr 2013;1(1):27-29.
Venous Air Embolism during Anterior Lumbar Surgery
Authors: Bader Stephen O , Cho Susie J , Heitz James W 
Published: February 2013

ABSTRACT
The use of transesophageal echocardiography (TEE) has improved the detection of venous air embolism (VAE), especially in the case of small VAE where clinical changes can be subtle and erroneously attributed to volume status or cardiac function. We present a case of VAE in a 62 years old female that occurred during anterior lumbar spine surgery that was diagnosed with the aid of TEE. As anterior lumbar spines surgery is traditionally not associated with VAE, we believe this is the first reported case of VAE in this type of procedure.

How to cite this article
Cho SJ, Bader SO, Heitz JW. Venous Air Embolism during Anterior Lumbar Surgery. J Perioper Echocardiogr 2013;1(1):30-32.
Recensement et politique
Authors: Beaud Jean-Pierre 
Published: February 2013

Le débat sur l’abandon de l’obligation de répondre au questionnaire long du recensement canadien a été l’occasion de poser certaines questions fondamentales (par exemple, sur l’avenir du recensement) et de diffuser certaines connaissances (par exemple, sur la « supériorité » des techniques d’échantillonnage probabiliste et sur les vertus de l’obligation de répondre). Certes, par bien des aspects, la décision du gouvernement conservateur est désastreuse : elle met en péril le crédit d’une institution statistique réputée, elle brisera la chaîne historique des données et rendra périlleuses bien des tentatives d’analyse longitudinale. Les dégâts sont déjà importants. Cela dit, cette décision a aussi conduit à ouvrir un certain nombre de boîtes noires (sur l’utilisation des données tirées du recensement, sur la capacité réelle des individus à répondre aux questions) et à replacer une question (Faut-il s’en tenir à la technologie canadienne du recensement pour collecter des données ?) dans un ensemble d’expériences nationales (abolition du recensement, utilisation des fichiers administratifs, etc.).
L’hétérogénéité des modes de cohabitation des 20-29 ans et des plus de 65 ans dans les régions françaises et espagnoles, à partir des données de recensement
Authors: Valdes Béatrice 
Published: February 2013

Cette étude des modes de cohabitation des jeunes adultes âgés de 20 à 29 ans et des personnes âgées de plus de 65 ans, à partir des échantillons de recensement de la base IECM, permet de mettre en évidence une hétérogénéité spatiale des modes de cohabitation, avec non seulement une opposition entre la France et l’Espagne, mais aussi des disparités infranationales entre les régions françaises et espagnoles. On découvre une continuité au-delà de la frontière en matière de corésidence familiale des personnes âgées, résultant d’une permanence des modèles familiaux traditionnels dans le nord de l’Espagne et dans les régions du sud de la France. Les disparités concernant la fréquence de la cohabitation des jeunes adultes sont moins fortes, et correspondent à un phénomène nouveau, plutôt homogène et détaché des « modèles familiaux traditionnels ». La vision cantonale, obtenue à partir des données cantonales du recensement français de 2006, permet de mettre en lumière des différences infrarégionales importantes en matière de corésidence familiale. On discerne clairement une concentration particulière du modèle traditionnel de la « famille souche » dans l’extrême sud-ouest de l’Aquitaine.
The Dynamics of Friendships and Victimization in Adolescence: A Longitudinal Social Network Perspective
Authors: Sentse Miranda , Dijkstra Jan Kornelis , Salmivalli Christina , Cillessen Antonius H. N. 
Published: February 2013

AbstractThis study investigated the development of relational and physical victimization in adolescent friendship networks over time. Using longitudinal social network analysis (SIENA) it was simultaneously tested whether similarity in victimization contributed to friendship formation (selection effects) and whether victimization of friends contributed to changes in victimization (influence effects). This was done for peer‐reported relational and physical victimization separately in two middle schools (total N = 480; N = 220, 47% girls, in School 1; N = 260, 52% girls, in School 2) across three time points (Grades 6 through 8; M ages 11.5–13.5). Gender, ethnicity, and baseline aggression were controlled as individual predictors of victimization. Similarity in physical victimization predicted friendship formation, whereas physical victimization was not influenced by friends' victimization but rather by adolescents' own physical aggression. Peer influence effects existed for relational victimization, in that adolescents with victimized friends were more likely to increase in victimization over time as well, over and above the effect of adolescents' own relational aggression. These selection and influence effects were not further qualified by gender. The results suggested that both selection and influence processes as well as individual characteristics play a role in the co‐evolution of friendships and victimization, but that these processes are specific for different types of victimization. Aggr. Behav. 39 :229‐238, 2013. © 2013 Wiley Periodicals, Inc.
High‐Concentration Aqueous Dispersions of MoS2
Authors: Yao Yagang , Tolentino Lorenzo , Yang Zhongzheng , Song Xiaojuan , Zhang Wen , Chen Yongsheng , Wong Ching‐ping 
Published: February 2013

AbstractMolybdenum disulfide (MoS2) nanosheets have been attracting increasing research interests due to their unique material properties. However, the lack of a reliable large‐scale production method impedes their practical applications. Here a facile, efficient, and scalable method for the fabrication of high‐concentration aqueous dispersion of MoS2 nanosheets using combined grinding and sonication is reported. The 26.7 ± 0.7 mg/mL concentration achieved is the highest concentration in an aqueous solution reported up to now. Grinding generates pure shear forces to detach the MoS2 layers from the bulk materials. Subsequent sonication further breaks larger crystallites into smaller crystallites, which promotes the dispersion of MoS2 nanosheets in ethanol/water solutions. The exfoliation process establishes a new paradigm in the top‐down fabrication of 2D nanosheets in aqueous solution. In the meantime, MoS2‐based sensing film produced using this approach has successfully demonstrated the feasibility of a low‐cost and efficient NH3 gas sensor using inkjet printing as a viable method.
Unique Antimicrobial Effects of Platelet‐Rich Plasma and Its Efficacy as a Prophylaxis to Prevent Implant‐Associated Spinal Infection
Authors: Li Hongshuai , Hamza Therwa , Tidwell John E. , Clovis Nina , Li Bingyun 
Published: February 2013

AbstractPlatelet‐rich‐plasma (PRP) has attracted great attention and has been increasingly used for a variety of clinical applications including orthopedic surgeries, periodontal and oral surgeries, maxillofacial surgeries, plastic surgeries, and sports medicine. However, very little is known about the antimicrobial activities of PRP. PRP is found to have antimicrobial properties both in vitro and in vivo. In vitro, the antimicrobial properties of PRP are bacterial‐strain‐specific and time‐specific: PRP significantly (80‐100 fold reduction in colony‐forming units) inhibits the growth of methicillin‐sensitive and methicillin‐resistant Staphylococcus aureus, Group A streptococcus, and Neisseria gonorrhoeae within the first few hours but it has no significant antimicrobial properties against E. coli and Pseudomonas. The antimicrobial properties of PRP also depend on the concentration of thrombin. In vivo, an implant‐associated spinal infection rabbit model is established and used to evaluate the antimicrobial and wound‐healing properties of PRP. Compared to the infection controls, PRP treatment results in significant reduction in bacterial colonies in bone samples at all time points studied (i.e. 1, 2, and 3 weeks) and significant increase in mineralized tissues (thereby better bone healing) at postoperative weeks 2 and 3. PRP therefore may be a useful adjunct strategy against postoperative implant‐associated infections.
Mild Metal‐Free Intramolecular Oxidative Alkylation of a Csp3H Bond Adjacent to a Nitrogen Atom: A Versatile Approach to Ring‐Fused Tetrahydroquinolines
Authors: Zhang Gen , Wang Shoulei , Ma Yunxia , Kong Weidong , Wang Rui 
Published: February 2013

AbstractA metal‐free intramolecular oxidative cross‐coupling reaction for the constructing Csp3Csp3 bonds mediated by 2,3‐dichloro‐5,6‐dicyanobenzoquinone (DDQ) under mild conditions was realized for the first time. This novel strategy provides a simple, efficient, and environmentally friendly access to diverse ring‐fused tetrahydroquinoline derivatives.