bluuebunny/crossref_metadata_2025_split huggingface dataset:
Radiolarian biostratigraphy and geochemistry of the Koziakas massif ophiolites (Greece)
Authors: Chiari Marco , Bortolotti Valerio , Marcucci Marta , Photiades Adonis , Principi Gianfranco , Saccani Emilio 
Published: September 2012

AbstractThe Koziakas massif, located at the western boundary of the Thessaly plain, consists of a nappe pile, which includes from bottom to top: 1– the Paleocene-Eocene Pindos Flysch; 2– the Western Thessaly Units (WTU); 3– the Ophiolitic Nappe, which consists of four minor tectonic units: a) the ophiolite-bearing Koziakas Mélange; b) the Fourka Unit; c) a thin discontinuous level of amphibolites (Metamorphic sole); d) a “Peridotite Unit”.This work focuses on the study of both the radiolarian assemblages of cherts situated at the top of basalts and the geochemistry of the latter. Our data show that in the Fourka Unit the cherts overlying the various basalts have diverse ages: a) latest Anisian (associated to WPB-OIB), almost coeval to the trachyandesites effused onto the continental rifts to the west; b) Early Carnian-Middle Norian and Late Carnian-Early Norian (associated to WPB-OIB); c) Early Norian (associated to E-MORB). In the Koziakas Mélange the age is Early-Middle Bathonian (associated to WPB-OIB).These data confirm the geodynamic evolution hypothesized for all the other ophiolitic massifs of the southern portions of the Dinaric-Hellenic belt, which can be synthesized as follows: a) birth of the Vardar-“Maliac” ocean in the Middle Triassic, coeval to continental basins to the west (Pindos basin, etc.); b) ocean spreading until Late Jurassic with intraoceanic subduction at the beginning of Middle Jurassic, followed by intraoceanic obduction; c) closure of the ocean (latest Jurassic-earliest Cretaceous) and thrusting of the Ophiolitic Nappe onto the eastern continental margin of Adria (the Pelagonian); d) westward displacement of the Ophiolitic Nappe testified by the presence of ophiolitic detritus first in the WTU (latest Jurassic to Late Cretaceous) and then, to the west, in the Pindos Flysch (Paleocene-Eocene).
Radiolarian biostratigraphy of the Perapedhi Formation (Cyprus): implications for the geological evolution of the Troodos Ophiolite
Authors: Bragina Liubov G. 
Published: September 2012

AbstractThe Troodos Ophiolite Complex of Cyprus is covered in places by an in-situ sedimentary sequence, the Perapedhi Formation, which is represented by umbers and radiolarian cherts. The age of the Perapedhi Formation has primary importance for an understanding of the geological history of Cyprus, the development of ophiolite assemblages and their structure. According to data obtained on radiolarian biostratigraphy, the Perapedhi Formation has a stratigraphic range from Middle - Upper Turonian to uppermost Santonian (Upper Cretaceous). Therefore, the formation of the Troodos Ophiolite Complex in the studied area ended before Middle Turonian times.
Lower Cretaceous carbonate gravity-flow deposits from the Bohinj area (NW Slovenia): evidence of a lost carbonate platform in the Internal Dinarides
Authors: Kukoč Duje , Goričan Špela , Košir Adrijan 
Published: September 2012

AbstractIn the Bohinj area (NW Slovenia), a distinctive interval of carbonate gravity-flow deposits overlying the pelagic Biancone limestone was analyzed for microfacies and dated with radiolarians. This interval, newly described as the Bohinj Formation, consists of a 3 m thick carbonate breccia capped by a 4 m thick massive calcarenite. The breccia is composed of clasts of carbonate platform facies, isolated ooids and oncoids, and bioclasts of shallow-marine benthos. Intraclasts of pelagic calpionellid wackestone and rare chert clasts are also present. Radiolarians from the pelagic limestone below indicate a latest Tithonian to earliest Berriasian age, and those above indicate a Berriasian to Early Valanginian age. Paleogeographically, the area was part of the Bled basin, which had a relatively distal position on the Adriatic continental margin. This position is suggested by flysch-type deposits in the area that are Early Cretaceous in age and thus correlate with the Bosnian Flysch in the central Dinarides. The Bohinj Formation provides evidence of a carbonate platform that must have been located more internally but is now not preserved. This inferred platform (named the Bohinj Carbonate Platform) may have developed on top of a nappe stack, which formed during the early emplacement of the internal Dinaric units onto the continental margin. The platform correlates regionally with genetically similar isolated carbonate platforms of the Alpine – Dinaride – Carpathian orogenic system, e.g., with the Plassen Carbonate Platform in the Northern Calcareous Alps and the Kurbnesh Carbonate Platform in Albania.
The PCCW Going Private Saga: What Is a Fair Deal?
Authors: Cheng Suwina L. S. 
Published: September 2012

ABSTRACT:
This instructional case discusses the process and maneuvers of a going private scheme in which the controlling shareholders of Pacific Century CyberWorks (PCCW) proposed to buy out all the shares of the minority shareholders and to then delist the company. The case highlights the importance of applying accounting knowledge in evaluating the value of a company. It also exposes students to the real-world ethical issues relating to vote manipulation and minority shareholder protection in the voting process of a going private deal.
Biomechanical validation of an artificial tooth–periodontal ligament–bone complex for in vitro orthodontic load measurement
Authors: Xia Zeyang , Chen Jie 
Published: September 2012

ABSTRACT

Objectives:
To develop an artificial tooth–periodontal ligament (PDL)–bone complex (ATPBC) that simulates clinical crown displacement.

Material and Methods:
An ATPBC was created. It had a socket hosting a tooth with a thin layer of silicon mixture in between for simulating the PDL. The complex was attached to a device that allows applying a controlled force to the crown and measuring the resulting crown displacement. Crown displacements were compared to previously published data for validation.

Results:
The ATPBC that had a PDL made of two types of silicones, 50% gasket sealant No. 2 and 50% RTV 587 silicone, with a thickness of 0.3 mm, simulated the PDL well. The mechanical behaviors (1) force-displacement relationship, (2) stress relaxation, (3) creep, and (4) hysteresis were validated by the published results.

Conclusion:
The ATPBC simulated the crown displacement behavior reported from biological studies well.
Electrodialysis of oxalic acid: batch process modeling
Authors: Kaláb Jiří , Palatý Zdeněk 
Published: September 2012

AbstractBatch electrodialysis of aqueous solutions of oxalic acid was investigated using a laboratory electrodialyzer ED-Z mini equipped with ion-exchange membranes Ralex-AMH-PES and Ralex-CMHPES (Mega, Stráž pod Ralskem, Czech Republic). The paper presents a mathematical model which enables to predict changes in the oxalic acid concentrations in the diluate and concentrate compartments during the electrodialysis process under various conditions specified by combinations of the initial acid concentrations with current densities. The calculation proved a good agreement between the developed model and the experimental results.
Biodegradation of tobacco waste by composting: Genetic identification of nicotine-degrading bacteria and kinetic analysis of transformations in leachate
Authors: Briški Felicita , Kopčić Nina , Ćosić Ivana , Kučić Dajana , Vuković Marija 
Published: September 2012

AbstractThe tobacco industry produces large quantities of solid and liquid waste. This waste poses a significant environmental problem, as some major components are harmful and toxic. The aim of this work is to isolate and identify the nicotine-degrading microorganisms in the composting of tobacco waste. The bioremediation process for the detoxification of waste was carried out in a column reactor at an airflow-rate of 0.4 L min−1 kg−1. The concentrations of nicotine and number of CFU in the samples taken from reactor were monitored over nineteen days. After nineteen days, 89.8 % of nicotine conversion was obtained. A nicotine-degrading bacterium, strain FN, was isolated from the composting mass and identified as Pseudomonas aeruginosa on the basis of morphology, 16S rDNA sequence, and the phylogenetic characteristics. To confirm that the isolated Pseudomonas aeruginosa FN is the actual nicotine degrader, batch experiments were performed using tobacco leachate. It was confirmed that the strain FN possesses a considerable capacity to degrade nicotine with simultaneous COD removal. The Monod kinetic model for single substrate was applied to obtain the substrate degradation rate and half saturation constant.
Theoretical enthalpies of formation and structural characterisation of halogenated nitromethanes and isomeric halomethyl nitrites
Authors: Kosmas Agnie , Ntivas Aristeidis , Liaska Stavroula , Papayannis Demetrios 
Published: September 2012

AbstractThe structural, energetic, and thermochemical properties of a number of halogenated nitromethanes, CHnX3−n NO2, and the isomeric nitrites, CHnX3−n ONO, are investigated, using theoretical ab initio and density functional theory (DFT) electronic structure methods. Analysis of the results and comparison with the maternal species, nitromethane, CH3NO2, and methyl nitrite, CH3ONO, reveal strong dependence of the molecular properties on the halogen induction effect. Opposite trends are obtained in the C—N and C—O bond dissociation energies (BDE) upon halogenation and higher stabilities are calculated for the trans-nitrite isomers, in contrast with the plain alkyl families where the nitroalkanes are the most stable species. Formation enthalpies, ΔH fℴ, at 298 K are calculated for all halogenated isomers.
Changes in Several Inflammatory and Oxidation Markers after Ovalbumin-Sensitization in a Guinea Pig Model of Allergic Asthma - A Pilot Study
Authors: Mokra D , Drgova A , Pullmann R , Mikolka P , Antosova M , Mokry J 
Published: September 2012

Changes in Several Inflammatory and Oxidation Markers after Ovalbumin-Sensitization in a Guinea Pig Model of Allergic Asthma - A Pilot StudyOvalbumin (OVA)-sensitization is a common way to evoke changes similar to changes in allergic asthma in humans. Activated cells produce various pro-inflammatory and vasoactive substances including reactive oxygen species. The goal of this pilot study was to evaluate mobilization of leukocytes into the lungs and oxidation processes induced by OVA-sensitization in a guinea-pig model of allergic asthma. Guinea-pigs were divided into OVA-sensitized and naïve animals. After sacrificing animals, blood samples were taken and total and differential leukocyte counts were calculated, and eosinophil cationic protein (ECP) and total antioxidant status (TAS) in the plasma were determined. Left lungs were saline-lavaged and total number of cells and differential leukocyte count in the bronchoalveolar lavage fluid (BAL) were calculated. Right lung tissue was homogenized, ECP, TAS and products of lipid and protein oxidation (thiobarbituric acid-reactive substances and lysine-lipoperoxidation end-products) were determined in the lung homogenate. OVA-sensitization increased a total number of cells and percentages of eosinophils and neutrophils and slightly increased ECP in the blood and in the BAL fluid. In addition, increased lipid and protein oxidation in the lung homogenate, and decreased TAS in the plasma was found in OVA-sensitized compared to naïve animals. In conclusion, OVA-sensitization increased mobilization of leukocytes into the lungs and elevated production of reactive oxygen spesies (ROS), accompanied by a decrease in plasma TAS.
Castleman's Disease Mimicking Carotid Body Tumor
Authors: Hanzel P. , Calkovsky V. , Sinak I. , Szepe P. , Zelenak K. , Hajtman A. 
Published: September 2012

Castleman's Disease Mimicking Carotid Body TumorThe authors present a case of 41-year-old patient with unicentric type of Castleman's disease in the neck imitating carotid glomus tumor. This rare condition can affect any lymph-node in the body and neck localization occurs only in 14% of cases. The case when Castleman's disease simulating chemodectoma have not been described yet in the literature. The authors give details on the course of the disease, its diagnosis and treatment and the discussion focuses on the reasons why the auxiliary imaging methods have led to the clinical diagnosis of carotid glomus tumor, and why the treatment was chosen.
A Comparative study of efficacy of high dose versus low dose of suxamethonium for endotracheal intubation
Authors: Yadav RK , Majhi PC , Pradhan BB 
Published: September 2012

As use of suxamethonium is associated with a large number of undesirable and serious side effects, including cardiac arrhythmias and malignant hyperthermia. These undesirable effects have prompted anesthesiologists to restrict use of suxamethonium. The low dose of the drug is expected to have lower side effects without compromising its neuromuscular blocking properties as the dose dependent side effects have been known for long, so the present study carried out to compare the efficacy of high dose (1.5mg/Kg) of suxamethonium to that of low dose (0.5mg/Kg) assessed by intubation condition with neuromuscular blockade. We prospectively randomized and compared the intubating conditions with neuromuscular monitoring in 100 patients undergoing elective abdominal, gynaecological and limb surgery in CMS-TH and found duration of apnoea and time taken for recovery of twitch height was significantly shorter. Without compromising the quality of neuromuscular blockade. Suxamethonium or Succinylcholine can be used in lower doses (0.5 mg/kg) in elective cases without airway compromise to achieve intubation. Journal of College of Medical Sciences-Nepal,2011,Vol-7,No-4, 53-57 DOI: http://dx.doi.org/10.3126/jcmsn.v7i4.6812
Pheochromocytoma: reporting of two cases with a brief review
Authors: Patowary BN , Kumar S , Praveen CR , Majhi PC , Yadav RK , Tayal A , Chhetri PK 
Published: September 2012

Pheochromocytoma arise from the chromaffin cells of adrenal gland or cells of sympathetic ganglion. The tumors secrete excessive adrenaline and nor-adrenaline and may cause severe elevation of blood pressure. Cardinal symptoms of pheochromocytoms are headache, diaphoresis, palpitation and high blood pressure which may be paroxysmal in nature. However, 10% of pheochromocytomas are only incidentally discovered during investigation of the patient for other reasons not related to suprarenal disease. We have reported here two cases of suprarenal tumors (pheochromocytoma), one of which is incidentally found while investigating her chest and epigastric pains. Journal of College of Medical Sciences-Nepal,2011,Vol-7,No-4, 78-86 DOI: http://dx.doi.org/10.3126/jcmsn.v7i4.6817
Basal cisternostomy – Is it a panacea for traumatic brain swelling?
Authors: Cherian I 
Published: September 2012

The evolution of modern neurosurgical techniques in traumatic brain injury has been ongoing for the last two centuries. However it has always been a challenge to obtain an effective clinical outcome, especially those following severe traumatic brain injuries. Other than the well established procedures for acute and/ or chronic subdural hematomas and depressed skull fractures, newer avenues for development of surgical techniques where indicted have been minimal. Practical scenario in trauma neurosurgery comes with multiple challenges and limitations. In an emergency setup, primary management of traumatic brain injuries fall upon the on-duty resident or medical officer in training. Due to the emergent nature of the condition and time being an important variable, the experience of the operating surgeon as well as the severity of the injury become an important contributing factor in the disease prognosis. Based on clinical experience and observation of acute neurosurgical service in tertiary medical center in a developing country, a novel technique in the management of trauma neurosurgery have been elucidated in the current study. The study proposes to apply the principles of microvascular surgery and skull base surgery in selected cases of severe traumatic brain injuries. Journal of College of Medical Sciences-Nepal,2012,Vol-8,No-1, 1-6 DOI: http://dx.doi.org/10.3126/jcmsn.v8i1.6818
Results of lateral pin fixation for the displaced supracondylar fracture of humerus in children
Authors: Gupta HK , Khare KD , Chaurasia D 
Published: September 2012

Supracondylar fracture is common fracture in children and choice of treatment in displaced fracture is closed reduction and percutaneous pinning. There are different methods of fixation techniques described and practiced. This study was undertaken to evaluate the results of lateral pin fixation for the displaced supracondylar fracture of humerus in children. 25 children with displaced Supracondylar fracture were treated with closed reduction and percutaneous lateral fixation by two K-wires. Above elbow slab applied for 4 weeks (mean 28.4 days ± SD 2.27) followed by physiotherapy and were followed for mean of 73.24 days( ± SD 3.66 days). The Flynn’s grading system was used to evaluate functional and cosmetic outcome. Loss in Baumann’s angle was measures. All the patient had satisfactory outcome with excellent to good grading as per Flynn’s criteria. The mean Baumann’s angle loss was 5.52 degrees(SD ± 1.75). Two pin tract infections noted which responded to oral cloxacillin for 5 days. No neurovascular or serious complication noted. In view of results obtained, lateral K -wire fixation provided good fracture stability, good union and satisfactory outcome with minimal complication and virtually no iatrogenic nerve injury. Journal of College of Medical Sciences-Nepal,2012,Vol-8,No-1, 13-17 DOI: http://dx.doi.org/10.3126/jcmsn.v8i1.6820
Pyoderma gangrenosum: A clinico- therapeutic profile of patients attending a tertiary care hospital in Nepal
Authors: Kharel C , Agrawal S , Rijal A , Bhattarai S 
Published: September 2012

Pyoderma gangrenosum (PG) is a primarily sterile inflammatory neutrophilic dermatosis characterized by recurrent cutaneous ulcerations with mucopurulent or hemorrhagic exudate. In many cases, PG is associated with inflammatory bowel disease, rheumatic disorder or neoplasia. The peak of incidence occurs between the ages of 20 to 50 years with women being more often affected than men. To study the clinical and therapeutic profile of patients with pyoderma gangrenosum. All patients diagnosed as pyoderma gangrenosum in the department of dermatology from July 14th 2003- July 12th 2008 were included in the study. Demographic profile, clinical features as well as relevant investigations, treatment and follow-up were noted. A total of 8 patients with pyoderma gangrenosum were diagnosed over a 5 year period. There were 3 males and 5 female patients whose ages ranged from 32 to 80 years. Lower limbs were the commonest site to be involved in 6 patients (75%). Recurrent episodes were noted in 4 patients (50%) and among them 3 patients (75%) had multiple ulcers. Histopathological confirmation of the diagnosis was done in 7 patients (87.5%). Association with ulcerative colitis was seen in 2 patients (25%). All patients were treated with dapsone and systemic steroids which showed resolution of the lesions in all patients. Pyoderma gangrenosum was seen more frequently in females and association with ulcerative colitis was seen in 25% of the patients. Journal of College of Medical Sciences-Nepal,2012,Vol-8,No-1, 29-35 DOI: http://dx.doi.org/10.3126/jcmsn.v8i1.6823
Suspected appendicitis during pregnancy: prevalence and management at prince Hashem Ben AL-Hussein Hospital (Zarqa/Jordan)
Authors: Al-Dahamsheh Hasan 
Published: September 2012

To evaluate the clinical picture and outcome of suspected appendicitis in pregnant women. Retrospective analytic study of 28 appendectomies performed during pregnancy for suspected appendicitis in our hospital at period April 2004 to September 2006. All files and medical records of these patients were analyzed and studied. Those including variables (demographic, clinical, laboratory and surgical outcomes data) were collected retrospectively. Prevalence of appendicitis was calculated from the total number of deliveries and abortions that occurred during this period. Numbers of correct and wrong diagnosis were reported and comparison of perinatal outcome, maternal morbidity and different variables in negative and positive laparotomies performed. The prevalence of suspected appendicitis in pregnancy is 0.29%. Incidences of negative laparotomies were 36%. The most diagnostic findings for acute appendicitis were history of periumbilical pain, anorexia and Rt iliac fossa findings. Half of wrong diagnosis were related to premature labor pain or abortion. The prevalence of suspected appendicitis during pregnancy in our environment during this period was higher than the reported incidence and rate of wrong diagnosis still high. Good clinical assessment with adjunct ultrasonic examination could reduce the incidence of negative laparotomies or prevent late complication. Delay in operation leading to higher rate of maternal morbidity and adversely affect the obstetric outcome. Journal of College of Medical Sciences-Nepal,2012,Vol-8,No-1, 36-43 DOI: http://dx.doi.org/10.3126/jcmsn.v8i1.6824
A unusual case of 356 vesical calculii
Authors: Agarwal A , Sigdel G , KC SR , Shrestha P , Belokar WK 
Published: September 2012

Multiple vesical calculi are rarely seen in urological practice. Males are affected more than the females. Vesical calculi are usually secondary to bladder outlet obstruction. These patients present with recurrent urinary tract infection, haematuria or with retention of urine. We report a 43 years male patient who presented with acute urinary retention. He had history of trauma over perineal region three years back following which he had recurrent urinary tract infection and thinning of stream. USG abdomen revealed normal upper urinary tract with echogenic debris in partially filled urinary bladder. Renal function test was with in normal limit. Per urethral catheterization failed and over antibiotic cover, patient was posted for cystourethroscopy followed by suprapubic cystostomy under spinal anaesthesia. Membranous urethral stricture found during urethroscopy could be managed by optical internal urethrotomy. On cystoscopy whole of bladder was filled with thick pus like material with multiple large urinary bladder calculi. Open cystolithotomy was done and we were surprised to see 356 stones of various size and shape after removal. Patient made uneventful recovery and discharged after 12 days of hospital stay. Journal of College of Medical Sciences-Nepal,2012,Vol-8,No-1, 44-47 DOI: http://dx.doi.org/10.3126/jcmsn.v8i1.6825
A rare presentation of orbital complication of invasive fungal sinusitis in an immunocompetent young boy-a rare case
Authors: Gaur S , Lavania A , Saxena R 
Published: September 2012

We present a case of allergic fungal sinusitis (AFS) in a 24 -year old man with history of left sided nasal obstruction and discharge since few years. Since few months he developed epiphora in the left eye associated with discomfort on eye movements. Patient was examined and CT with contrast was done. CT contrast showed an enhancing lesion in Left maxillary and ethmoid sinuses and erosion of the inferior bony wall of the orbit and medial wall of maxillary sinus. Though most patients of fungal sinusitis are immunocompromised but this patient was young male immunocompetent and made an unusual presentation with visual epiphora and painful eye movements. CT showed bony erosion of the Left inferior Bony wall of the Orbit and medial wall of Maxillary Sinus. After through examination and specific investigations, the patient was posted for surgery. We planed for Cald well –Luc’s Surgery and Endoscopic excision of the mass .Histological examination was reported as non malignant and microscopy showed Fungal Hyphae. After the surgery patient was discharged satisfactorily within couple of days and followed up regularly. Journal of College of Medical Sciences-Nepal,2012,Vol-8,No-1, 48-51 DOI: http://dx.doi.org/10.3126/jcmsn.v8i1.6826