bluuebunny/crossref_metadata_2025 huggingface dataset:
Synthesis of the cross-linked humic acid supporting palladium catalyst and its catalytic properties for Heck reaction
Authors: Xu Qijie , Shi Wenzhong , Cui Yuanchen
Published: July 2012

Synthesis of the cross-linked humic acid supporting palladium catalyst and its catalytic properties for Heck reaction

Cross-linked humic acid supporting palladium (CL-HA-Pd) catalyst was prepared readily and characterized by infrared analysis (IR) and thermogravimetric analysis (TG). The catalyst could catalyze the Heck reaction of aryl halide or substituted aryl halide with vinyl compounds in N2 atmosphere; the yields were above 95%. The catalyst could be recovered and reused 7 times with the Heck reaction of iodobenzene with acrylic acid, and the yield was above 75.6%. The results showed that the catalyst had high catalytic activity even at low temperature of 62°C or with a small amount of the catalyst.
Studies on the transformation of calcium sulphate dihydrate to hemihydrate in the wet process phosphoric acid production
Authors: Grzmil Barbara , Kic Bogumił , Żurek Olga , Kubiak Konrad
Published: July 2012

Studies on the transformation of calcium sulphate dihydrate to hemihydrate in the wet process phosphoric acid production

The influence of the process temperature from 85°C to 95°C, the content of phosphates and sulphates in the wet process phosphoric acid (about 22-36 wt% P2O5 and about 2-9 wt% SO4
2-) and the addition of αCaSO4·0.5H2O crystallization nuclei (from 10% to 50% in relation to CaSO4·2H2O) on the transformation of calcium sulphate dihydrate to hemihydrate has been determined. The wet process phosphoric acid and phosphogypsum from the industrial plant was utilized. They were produced by reacting sulphuric acid with phosphate rock (Tunisia) in the DH-process. The X-ray diffraction analysis was used to determine the phase composition and fractions of various forms of calcium sulphates in the samples and the degree of conversion of CaSO4·2H2O to αCaSO4·0.5H2O and CaSO4. It was found that the transformation of CaSO4·2H2O to αCaSO4·0.5H2O should be carried out in the presence of αCaSO4·0.5H2O crystallization nuclei as an additive (in the amount of 20% in relation to CaSO4·2H2O), at temperatures 90±2°C, in the wet process phosphoric acid containing the sulphates and phosphates in the range of 4±1 wt% and 27±1 wt%, respectively.
Perception, Processing and Storage of Subphonemic and Extralinguistic Features in Spoken Word Recognition - An Argument from Language Variation and Change
Authors: Łukasiewicz Elżbieta
Published: July 2012

Perception, Processing and Storage of Subphonemic and Extralinguistic Features in Spoken Word Recognition - An Argument from Language Variation and Change

Recent research on speech perception and word recognition has shown that fine-grained sub-phonemic as well as speaker- and episode-specific characteristics of a speech signal are integrally connected with segmental (phonemic) information; they are all most probably processed in a non-distinct manner, and stored in the lexical memory. This view contrasts with the traditional approach holding that we operate on abstract phonemic representations extracted from a particular acoustic signal, without the need to process and store the multitude of its individual features. In the paper, I want to show that this turn towards the "particulars" of a speech event was in fact quite predictable, and the so-called traditional view would most probably have never been formulated if studies on language variation and language change-in-progress had been taken into account when constructing models of speech perception. In part one, I discuss briefly the traditional view ("abstract representations only"), its theoretical background, and outline some problems, internal to the speech perception theory, that the traditional view encounters. Part two will demonstrate that what we know about the implementation of sound changes has long made it possible to answer, once and for all, the question of integrated processing and storage of extralinguistic, phonemic and subphonemic characteristics of the speech signal.
The Effects of Age on Stroop Interference in Clinical vs. Healthy Groups of Children
Authors: Okuniewska Hanna , Maryniak Agnieszka
Published: July 2012

The Effects of Age on Stroop Interference in Clinical vs. Healthy Groups of Children

The Stroop task is widely used to assess attentional dysfunction due to a frontal or frontoparietal deficit and is also thought to be related to the maturation of the prefrontal cortex. The study aimed to prove the diagnostic usefulness of the Polish Names and Colors Interference Test (TINiK) in a clinical setting and to investigate the pattern of performance on four TINiK subtasks according to the type of brain damage (focal or diffuse) and age of the patients. A total of 107 subjects (62 female, 45 male) aged 11-18 were divided into two groups: children aged 10;4-14;6 and adolescents aged 14;7-17;10 within each diagnostic category: healthy (H - 35), heterogeneous focal brain damage (BD - 36) and cardiac arrhythmia (CA - 36). The number of correct responses in the 60s time limit was collected for each TINiK task. The H group significantly outperformed both clinical groups. The H and CA groups show improvement of performance systematically with age on all TINiK subtasks although at a different level. The BD group displayed merely non-significant developmental improvement especially among the adolescent group. A discriminant analysis using the four basic TINiK scores was able to significantly differentiate the BD from the H group (83.1%) and the BD from the CA group (74.6%), but less well the CA from the H group (63.9%). TINiK has acquired preliminary neuro-psychological validation in Polish children. Developmental improvement in interference control may be hampered by various neuropathological mechanisms which are yet to be identified.
Use of ICT and Inappropriate Effects of Computer Use - Future Perspectives of Preschool and Primary School Teachers
Authors: Radetić-Paić Mirjana , Ružić-baf Maja
Published: July 2012

Use of ICT and Inappropriate Effects of Computer Use - Future Perspectives of Preschool and Primary School Teachers

The aim of this paper is to gain an insight into some aspects of personal computer literacy and preschool and primary school teachers' education on the use of information and communication technologies (ICT). Another aim of the paper is to point out the inappropriate effects of computer use (personal as well as with children of school and preschool ages) according to the students of the Department of Preschool and Primary School Teaching of the Juraj Dobrila University in Pula. The x2 test was used in the data processing, along with the calculation of marginal frequencies for all the examined variables. The scientific and application value of this work is that, based on the indicators obtained, it suggests a need for permanent education of both preschool and primary school teachers on the applicability of ICT at all pedagogical and educational levels, and on all the positive but also negative aspects of ICT use in the widest sense.
Polish Secondary School Students Learning German: Motivation, Orientations and Attitudes
Authors: Okuniewski Jan
Published: July 2012

Polish Secondary School Students Learning German: Motivation, Orientations and Attitudes

The study investigates the German language learning motivations of Polish secondary school students. Questionnaire data were collected from 100 students aged 16-18 years. Using the AMOS 18 package, structural equation modeling was run to analyze how language learning goals, attitudes, self-related beliefs, and parental encouragement interact in shaping motivated learning behavior. The results of this study reveal that the important factor which exerts the most influence on motivated learning behavior is an integrative attitude, i.e. openness to and interest in the community using the language, as well as the culture, customs and international status. Another important factor in this model is parental encouragement, as it affects the German language community, learning and instrumental values.
A New Species of Oochoristica (Cestoda, Linstowiidae) from the Arabian Toad-Headed Agama, Phrynocephalus Arabicus (Sauria, Agamidae), from the United Arab Emirates
Authors: Schuster R.
Published: July 2012

A New Species of Oochoristica (Cestoda, Linstowiidae) from the Arabian Toad-Headed Agama,Phrynocephalus Arabicus(Sauria, Agamidae), from the United Arab Emirates

Eight complete strobilae ofOochoristica phrynocephaliSchuster, sp. n. were recovered from small intestines of 4 out of 13 Arabian toad-headed agamas,Phrynocephalus arabicusfrom Dubai emirate, United Arab Emirates.O. phrynocephalibelongs to a group ofOochoristicaspecies possessing circular suckers and fewer than 25 testes in a single cluster. It can be distinguished fromO. sobolevi, O. elongata, O. parvogenitalis, O. feliui, O. jonnesi, O. macallisteri, O. lygosomatis, O. junkeaandO. novaezealandaeby smaller scolices and lesser diameter of suckers.
A New Species of the Genus Paraphlegopteryx (Trichoptera, Lepidostomatidae) from India
Authors: Parey S. , Saini M.
Published: July 2012

A New Species of the Genus Paraphlegopteryx (Trichoptera, Lepidostomatidae) from India

A new species of genus Paraphlegopteryx Ulmer is described and presented from Indian Himalaya, namely Paraphlegopteryx weaveri Parey et Saini, sp. n. from Zemithang (Arunachal Pradesh) belonging to the P. composite group. As an addition to this genus the 15 valid species from India is represented. A key to all the 15 species of India which is modified after Weaver (1999) is provided.
Distribution and Bionomics of Udea Alpinalis (Lepidoptera, Pyralidae) in Western Carpathians (Slovakia)
Authors: Panigaj Ľubomír , Kulfan Miroslav
Published: July 2012

Distribution and Bionomics of Udea Alpinalis (Lepidoptera, Pyralidae) in Western Carpathians (Slovakia)

Here we summarize all known and new localities with occurrence of Udea alpinalis (Denis et Schiffermüller, 1775) in Slovakia. Furthermore, based on our data we discuss distribution, hypsometric claims and variability of forewings design.
Application of the Bayesian Belief Nets in dam safety monitoring
Authors: Mirosław-Świątek Dorota , Kembłowski Mariusz , Jankowski Władysław
Published: July 2012

Application of the Bayesian Belief Nets in dam safety monitoring

The systems for earth dam monitoring should enable measurements of basic physical parameters describing the behavior of the structure, including: soil water pressure, soil stress, displacements, leaks, and drainage discharges. In the case of earth dam safety assessment, the monitoring data are used to detect any anomalies in dam behavior. In this paper, the dam safety has been analyzed using the Bayesian Nets. Two types of information: water pressure measurements and drainage discharge measurements are used in analyses. The seepage anomalies in the Klimkówka Dam were considered in demonstrate the practical advantages of using the Bayesian Nets for monitoring data interpretation. Presented examples of the Bayesian Nets applications (forward and backward propagation) in analysis of seepage through earth dams show that this method can be an effective tool supporting an assessment of dams technical condition and monitoring of the dam safety.
Linkage of "Lakes Zwenkau-Cospuden" as one of the elements of land reclamation after the open-cast mines and its future importance for the development of the region
Authors: Gabryś Katarzyna
Published: July 2012

Linkage of "Lakes Zwenkau-Cospuden" as one of the elements of land reclamation after the open-cast mines and its future importance for the development of the region

The open-cast mine "Böhlen", closed in 1921, in 1969 was transformed into "Zwenkau"("Zw") open-cast mine. In the seventies, together with its smaller neighbouring mine "Cospuden"("Cs"), became one of the greatest enterprises of the Central German lignite mining area. In the last centuries Zw and Cs mines had an significant influence on the economic, technical and scientific progress of this region. Although the mines were in separate mining areas, very close relations of proximity existed between them, particularly in the superposition of the lowering ground water areas. Thus, the total mass of the mine tailings "Cospuden" in the mining sector "Zwenkau" was flattened and designed for land reclamation. Since the cessation of lignite mining in the area Böhlen/Zwenkau/Cospuden the south region from Leipzig has been changed fundamentally. The remaining holes, which mines left behind, became lakes. Along the lakes raised beaches, ports and holiday houses. Lusatia and Central German Mining Administration Company (LMBV), which is now responsible for the reclamation and rehabilitation of disused mines, proposed a new perspective of this region, perceived as a part of nature and human-being. The main emphasis has been placed on the development of created lakes, flow-up phase and good water quality assurance. Some of the new lakes are connected together with artificial canals and locks. This also relates to "Zwenkau-Cospuden Lakes" (LMBV 2009). In this article the methods of management former mining areas in the South from Leipzig, with the great accent put on the linkage of "Lakes Zwenkau-Cospuden", are described. Necessary test on the soil samples from this field are explained. Finally, the influence of the restoration of the area on the development of the region is shown.
A study of application of chalcedonite as a manganese dioxide carrier
Authors: Michel Magdalena
Published: July 2012

A study of application of chalcedonite as a manganese dioxide carrier

Chalcedonite is a sedimentary siliceous rock, which occurs at four deposits in Poland and is included into a group of unique rocks. Chalcedonite is utilized in water treatment technology, mostly as an effective filtration material due to its mesoporous structure and extended outer surface of the grains. This paper presents three different methods of impregnation of the mineral material (MDMC-1, MDMC-2, MDMC-3) by manganese dioxide. As an oxide carrier chalcedonite was used. The results of the chalcedonite surface modification with SEM-EDS technique were presented. It was found that the chalcedonite is a very good manganese dioxide carrier and the modification of the chalcedonite surface changes its chemical composition, structure and value of the specific surface area.
Linearization of the Sobolev and Babeyko's formulae for transformation of P-wave velocity to density in the Carpathian-Pannonian Basin region
Authors: Csicsay Kristián , Bielik Miroslav , Mojzeš Andrej , Speváková Eva , Kytková Bibiána , Grinč Michal
Published: July 2012

Linearization of the Sobolev and Babeyko's formulae for transformation of P-wave velocity to density in the Carpathian-Pannonian Basin region

The initial density model has to be based on a reasonable geological hypothesis and while the modelling process is non-unique, one of the interpretation aims is to define the robust parameters of the model. It is important at this stage to integrate the seismic and gravity data. One of the possibilities how to integrate these data is transformation of the seismic velocities to densities. The Sobolev and Babeyko's formulae belong to the most available relationships for this transformation. They are very complex and rigorous taking into account the PT conditions. On the other hand its application is relatively complicated. Therefore the main goal of the paper is to try to determine more easily the formula for transformation of the seismic velocities to densities. Based on the analysis of the results obtained using the Sobolev and Babeyko's formula on real data, we found out that in the Carpathian-Pannonian Basin region this formula can be transformed to simpler linear velocity-density relationship with required accuracy.
Influence of Low-Conductive Coating on Insulation System of Rotary Electric Machine
Authors: Mráz Petr , Kindl Vladimír , Hruška Karel
Published: July 2012

Influence of Low-Conductive Coating on Insulation System of Rotary Electric Machine
Fuzzy Control of the Permanent Magnet Synchronous Machine Singularly Perturbed Fed By a Three Level Inverter
Authors: Massoum Ahmed , Meroufel Abdelkader , Wira Patrice , Fellah Mohammed
Published: July 2012

Fuzzy Control of the Permanent Magnet Synchronous Machine Singularly Perturbed Fed By a Three Level Inverter

In this paper, we present the control technique based on the singular perturbation technique controlled by a fuzzy regulator applied to the permanent magnet synchronous machine (PMSM). This technique applied to the PMSM conducts to a separation of the variables into disjoined subset or two separated models: one having a slow dynamics, and the other a fast dynamics. To ensure certain robustness to the decoupled control system based on these techniques, the control speed and theIdcurrent is carried out by fuzzy regulators. A qualitative analysis of the principal variables evolution describing the behavior of the global system (PMSM-Inverter with MLI-Control) and its robustness is developed by several tests of digital simulation in last stage.
A Study of the Behaviour of Water Droplets Under the Influence of Uniform Electric Field in Epoxy Resin Samples
Authors: Cheng Yonghong , Zhao Xu , Danikas Michael , Christantoni Despoina , Zairis Pavlos
Published: July 2012

A Study of the Behaviour of Water Droplets Under the Influence of Uniform Electric Field in Epoxy Resin Samples

Water droplets on the surface of epoxy resin samples were investigated under the influence of uniform electric fields. Several parameters of water droplets were investigatedwrtthe flashover voltage of the epoxy resin samples, such as water conductivity, droplet volume, number of droplets as well as the positioning of the droplets regarding the electrodes. The droplet behavior is affected by the above mentioned parameters. Perhaps the most striking conclusion is that the flashover voltage depends more on the positioning of the dropletswrtthe electrodes than on the droplet volume and/or number of droplets.
Influence of harvest date and storage conditions on the content of chlorophyll pigments in pear peels
Authors: Błaszczyk Jan
Published: July 2012

During each season, pears were harvested on three dates at four-day intervals. The fruit was stored for 150 days in temperatures of 0-0.5°C in common cold storage (NA - normal atmosphere) and also in controlled atmospheres (CA) of different gaseous content: 0.8% CO2 + 2% O2, 2% CO2 + 2% O2 and 3% CO2 + 3% O2. After removing the pears from storage they were additionally stored for seven days in a temperature of 17°C - simulated shelf life. The content of chlorophyll pigments (chlorophyll a + b) was determined after each harvest date, storage time and simulated shelf life. Based on the results, I concluded that the a + b chlorophyll content in the peel of both pear cultivars significantly decreased along with the subsequent harvest date. In addition, the storage conditions had a significant influence on the studied factor. Compared to the normal atmosphere, the controlled atmosphere conditions were more efficient in slowing the yellowing of the fruit due to reduced chlorophyll degradation. The atmosphere consisting of 3% CO2 + 3% O2 or 2% CO2 + 2% O2 was more favourable for the higher content of chlorophyll a + b in the peel of ‘Conference’ pears than 0.8% CO2 + 2% O2. In the case of ‘Concorde’ pears, the influence of particular compositions of CA on the content of chlorophyll a + b changed over the years.
Effect of seed age and fertilisation on the growth and decorative quality of selected ornamental grasses
Authors: Kapczyńska Anna
Published: July 2012

Ornamental grasses have become a popular group of plants for use in landscaping. The aim of the present experiment was to assess the influence of seed age on the germination of ornamental grasses. In the glasshouse experiment, seeds of three grass genera, Melica, Pennisetum and Stipa, were tested. The seeds came from the Plant Breeding and Acclimatisation Institute in Bydgoszcz. They were harvested in 2005, 2006 and 2007 (so they were three years old, two years old, and one year old, respectively). In all the genera, the youngest seeds showed the highest germination, which varied between 61% (Melica transsilvanica) and 74% (Melica ciliata ssp. taurica). The germination process of the oldest seeds (three years old) proceeded at various rates, depending on the species, but the highest ability to germinate was observed in Pennisetum flaccidum (39%) and Stipa tenuissima (42%). After germination, Melica sp. and Stipa sp. plants were repotted and treated with Hydrocote (a slow-release fertiliser). The results obtained indicated that the fertilisation of the grasses significantly increased the height of the plants. Plants of Melica altissima ‘Atropurpurea’ also formed three times more inflorescences than the control plants. The application of the fertiliser had a positive effect on leaf colour (a more intense green) in all of the tested genera.
The base colour of fruit as an indicator of optimum harvest date for two apple cultivars (Malus domestica Borkh.)
Authors: Łysiak Grzegorz
Published: July 2012

The CIE L* a* b* colour system is used to evaluate food colours. Its advantage is that the base skin colour in apples can be measured on the same fruit before and on the optimum harvest date. The aim of the research conducted between 2002 and 2006 was to evaluate a quick and non-destructive method of determining the optimum harvest date of apples intended for long storage based on the changes observed in the base skin colour. Another important research aspect was to compare this method with other methods or indicators used to determine the harvest date. The colour measurement was conducted on two apple cultivars, Šampion and Royal Gala, with the aim of, amongst other factors, establishing a standard for each that could be used in practice in fruit production. From amongst the evaluated colour indicators L*, a*, b*, Hueab angle and chroma, changes in the base colour were best illustrated by the a* coordinate value and Hueab angle value. Based on the evaluation of the quality of fruits after storage, it can be stated that the fruits had the best quality when the a* coordinate during harvest ranged between -7 and -8 for ‘Šampion' and between -3 and -5 for ‘Royal Gala’. The Hueab angle assumed a value between 100 and 101 for ‘Šampion' and between 96 and 99 for ‘Royal Gala’ during the optimum harvest date. Therefore, the a* coordinate and the Hueab angle can be used to indicate harvest maturity.
Peutz-Jeghers polyp: A Retrospective Study on Twelve Cases Received at the Department of Pathology, Bangabandhu Sheikh Mujib Medical University
Authors: Choudhury Tamanna , Enam Suraiya , Begum Ferdousy , Taufiq Md. , Kamal Mohammed
Published: June 2012

Background: Peutz Jegher syndrome is a rare inherited condition characterized mainly by gastrointestinal hamartomatous polyposis and mucocutaneous pigmentation. The polyps are mostly found in the small bowel and less frequently in the stomach and large gut. Objectives: This study was done to observe the clinical and pathological features of Peutz Jegher polyps. Methods: A retrospective study was carried out in the Department of Pathology, Bangabandhu Sheikh Mujib Medical University (BSMMU) during the five and a half year period from 1st January 2006 to 30th June 2011. From the records the cases which were diagnosed as Peutz Jeghers polyps were sorted out, clinical data was compiled and slides were reviewed. Results: During this period 12 cases were diagnosed as Peutz Jeghers polyp. Most of these (n=58.33%) occurred in the second decade of life and majority (n=9) were located in the large gut including sigmoid colon and rectum. Both sessile as well as pedunculated types were seen. All had characteristic histologic features of Peutz Jeghers polyps and in only one case there was a mild dysplastic change in the glandular lining epithelium. Conclusion: Close monitoring of the patients with peutz Jeghers polyp can reduce the morbidity of this condition.DOI: http://dx.doi.org/10.3329/bsmmuj.v5i1.10994 BSMMU J 2012; 5(1):12-17
Extraction of Asymptomatic Tooth With And Without Antibiotic Therapy
Authors: Agrawal Manish , Rahman Quazi Billur , Akhter Mahmuda
Published: June 2012

Background: Extraction of asymptomatic tooth constitutes a large proportion of maxillofacial surgery procedure and antibiotics are indiscriminately prescribed before and after tooth extraction in Bangladesh. Objectives: This cross sectional study was designed to evaluate the efficacy of postoperative antibiotic therapy in reducing postoperative morbidity in two groups following extraction of asymptomatic tooth. Methods: A total of 112 patients, 54 Female and 58 Male, aged 16 to 35 years comprised the study materials. Diagnosis was made by accurate history, clinical examination and radiographs. Clinical examination was done to assess the presence or absence of local infection, pain, swelling and mucosal coverage whereas Orthopantomogram (OPG) and Intraoral Periapical (IOPA) radiographs were taken to assess the angulations, position and bony coverage. Tooth extraction was performed with buccal guttering technique after adequate elevation and reflection of full thickness mucoperiosteal flap. The Control Group was given Cap. Amoxicillin 500mg, orally daily for 5 days postoperatively. The Study Group was not given antibiotics. Pain, swelling and trismus were evaluated preoperatively and on 2nd, 7th and 14th postoperative day. Data was processed and analyzed using SPSS version 16.0 for windows and was compiled and test of significance was done using Chi square (x²) test and unpairedt test. Results: Statistical analysis of the data indicated that pain and swelling was significantly reduced and significant maximum mouth opening was achieved, when preoperative and postoperative results were compared, in both the groups P > 0.05, statistically not significant. Conclusion: There were no significant differences among the groups in the incidence of postoperative morbidity (pain, swelling and trismus).DOI: http://dx.doi.org/10.3329/bsmmuj.v5i1.10996 BSMMU J 2012; 5(1):24-28
Silent Myocardial Ischemia (SMI) and its Association with Microalbuminuria in Type 2 Diabetes Mellitus (DM)
Authors: Zabeen Shahana , Hoque Md. Mozammel , Rahman Md. Rezwanur
Published: June 2012

Background: As silent myocardial ischemia (SMI) is more common in diabetic population leading to the development of future coronary artery disease (CAD), so its early diagnosis is important. SMI can be diagnosed by conventional cardiac stress testing. Presence of SMI can also be suspected by microalbuminuria (MAU) because recently it is claimed that MAU is one of the important predictor for cardiovascular disease. Objective: The study was designed to explore the association between SMI & MAU in type 2 DM. Methods: It was a cross sectional study carried out in the Department of Biochemistry, BSMMU during the period of July 2006 to June 2008. One hundred diagnosed type 2 DM patients were selected from out patient department of BIRDEM. Enrolled study subjects were advised to do ETT and then categorized as ETT +ve & ETT-ve on the basis of ETT findings. Urinary micro albumin was measured in all study subjects. Unpaired t test, , chi square test, odds ratio were used to see the level of significance Results: Among the 100 type 2 diabetic subjects of both sexes 50 (male -24, female- 26) were ETT +ve designated as type 2 DM with silent MI and rest 50 ( male- 25 , female-25) were ETT ve designated as type 2 DM without silent MI. 21 patients (42%) out of 50 type 2 DM with silent MI & 16 patients (32%) out of 50 type 2 DM without silent MI found to have microalbuminuria. Calculated odds ratio was 1.5. Conclusion: Microalbuminuria is a possible risk factor for SMI in type 2 DM. Urinary micro albumin can be used particularly as a screening test for early detection of SMI.DOI: http://dx.doi.org/10.3329/bsmmuj.v5i1.11016 BSMMU J 2012; 5(1):42-45
Trends in the Presentation of Cell Biology and Histology in Contemporary Histology Books as Revealed in Their Prefaces
Authors: Amin Nahid Farhana , Shamim Khondker Manzare
Published: June 2012

Background: Teaching and learning of Cell Biology and Histology have gone through remarkable changes in recent times. The undergraduate medical courses in Bangladesh have incorporated some of these changes but seem to have some more way to go. Good Histology books are supposed to be reflectors of the desirable changes and of the present trends in teaching-learning and assessment in the subject in good institutions. Analyses of the Prefaces of these books can help in developing an insight into the approaches taken and means applied in presenting Cell Biology and Histology in the books for meeting the demands of time. This insight, in turn, would guide the curriculum planners of the country and others seeking for changes in taking necessary steps. Objectives: To analyse the Prefaces of contemporary Histology books, qualitatively, for noting the approaches taken and means applied in presenting Cell Biology and Histology in the books. Methods: The study was descriptive, observational and qualitative in nature, carried out in the Department of Anatomy, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, between July 2007 and June 2008. The study materials were the Prefaces of fifteen Histology books dealing with Cell Biology and Histology, published since 1984. The Prefaces were analysed qualitatively to identify the information provided and comments made by their authors/editors on the approaches taken and means applied in the books in selecting and presenting topics, text and illustrations. The observations were organised into specific themes. Results: Sixteen themes could be identified. These include, among others, special emphasis in the books on following curricular reforms, incorporation of new information and special focus on the relationship of structures with functions. Additions and improvements regarding tables and illustrations are also highlighted. Conclusion: By incorporating the findings of the present study with the present-day ideas and trends in Cell Biology and Histology teaching-learning and assessment in the renowned institutions of the world, as evident from the available literature, suggestions can be formulated on improving the methods of teaching and assessment in Cell Biology and Histology in Bangladesh.DOI: http://dx.doi.org/10.3329/bsmmuj.v5i1.11017 BSMMU J 2012; 5(1):46-54
Five Root Canals for a Maxillary First Molar Tooth  A Case Report
Authors: Islam Mohammad Aminul , Alam Md. Shamsul
Published: June 2012

This case report represents assessment and management of a maxillary left first molar tooth containing five root canals by endodontic treatment. In this case Mesiobuccal 2 (MB2), Mesiopalatal (MP) and Distobuccal (DB) canals were missed as well as very poor obturation at palatal and mesiobuccal1(MB1) canal during previous treatment history. Three mesiobuccal (MB1, MB2, and MP), DB and palatal canals were identified and endodontic retreatment was done followed by final restoration. This case provides an evidence of variations in the root canals of the mesiobuccal root of maxillary first molar tooth. Complete clinical and radiographic examination and adequate knowledge of the morphology of this kind of teeth is necessary for successful clinical outcome.DOI: http://dx.doi.org/10.3329/bsmmuj.v5i1.11026 BSMMU J 2012; 5(1):61-64
Management of Tooth Resorption by Using Calcium Hydroxide: A Case Report
Authors: Chowdhury Shirin Sultana , Alam Md. Shamsul
Published: June 2012

In this case report, the treatment of internal root resorption in a 24 years-old male was done by using nonsurgical root canal therapy and the clinical outcome was evaluated. Both the maxillary central incisors were examined clinico-radiographically. On clinical examination, the maxillary incisors were found discolored. Radiographic examination revealed a punched-out radiolucent lesion on the cervical area of pulpal canal of both of the teeth and periradicular radiolucency was also evident. Conservative non-surgical root canal treatment was performed with long term calcium-hydroxide therapy. Following eight months of the treatment, the resorption process was stopped and a calcific bridge was formed at the apex of the roots indicated the evidence of recalcification. Conventional root canal obturation method was implied followed by clinical and radiological evaluation for next two years.DOI: http://dx.doi.org/10.3329/bsmmuj.v5i1.11029 BSMMU J 2012; 5(1):72-75
Successful Pregnancy Following Repair of Vesicouterine Fistula Following Repeat Caesarean Section: A Case Report
Authors: Akter Dilruba , Shah Salahuddin , Islam Ferdousi , Tasnim Saria
Published: June 2012

A lady, para 2, both delivered by caesarean section for prolonged labour, presented with the complaints of menouria and infertility for 3 years following her last caesarean section. She had history of haematuria during menstruation and her menstrual flow is scanty. Her first baby was female and alive, but her second baby was stillborn following prolonged and obstructed labour. This has been continuously blamed by family and others for happening that events. Her fistula was confirmed by ultrasound scan, histerography and cystoscopy. The vesicouterine fistula was treated by local repair with omental patch through transperitoneal approach. Pregnancy following one year of successful repair has turned her from miserable to happiness in life.DOI: http://dx.doi.org/10.3329/bsmmuj.v5i1.11030 BSMMU J 2012; 5(1):76-78
B Subgroup: Bx blood Group in a Patient : A Case Report
Authors: Khatun Ayesha , Biswas Jolly , Habibullah Munshi Md. , Islam Ashadul , Shill Nittyananda , Rahman Atiar , Shaheen Sheikh Saiful Islam
Published: June 2012

This is a report of a case of B Sub Group: Bx, first ever detected in Bangladesh, while doing compatibility test of a sample of a patient undergoing cardiac surgery. The patient was referred to the transfusion medicine department of Bangabandhu Sheikh Mujib Medical University to do cross-match with 8 proposed donors of same ABO group prior to cardiac surgery. His red cells showed weak agglutination with anti-B, anti-AB and in his serum there was potent Anti-A and weak anti-B which was not detected at 370C. After adsorption with anti-B an elute was prepared from patients cells which agglutinate with B and AB cells but did not agglutinate with A or O cells. The patient could be transfused with B blood but in this situation of cardiac surgery, as he should have to be kept in hypothermic condition, we transfused him with O washed red cell with AB plasma during operation. Patient was released from hospital without any complication. The weak B subgroups are: B3, Bx & Bel. B3 shows a mixed field of agglutination with anti B. Bx shows a weak agglutination and weak anti-B is found in the serum. Bel is not agglutinated with anti-B but is only adsorbed anti-B. With meticulous attention, cell & serum grouping of recipient and proposed donor/s to be done along with 3 phase cross-matching (Saline phase at room temp, at 4 and 37 degree Celsius temp, Indirect Coombs Test phase) to ensure right blood to the right patient at right time.DOI: http://dx.doi.org/10.3329/bsmmuj.v5i1.11032 BSMMU J 2012; 5(1):81-82
Study of motion of spar-type floating wind turbines in waves with effect of gyro moment at inclination
Authors: Mostafa N. , Murai M. , Nishimura R. , Fujita O. , Nihei Y.
Published: June 2012

Recently, a number of research groups have paid much attention to the study of Floating Offshore Wind Turbines (FOWTs). Similar to other offshore structures, the FOWTs are subjected to irregular waves and wind loads which cause a dynamic response in the structures. Under marine environmental conditions, they face many forces which prevent them from floating in the upright condition; they incline as a result of the winds, strong currents, typhoons, cyclones, storms etc. The motion of the FOWT might be changed by a change in gyroscopic effect which depends on the angular velocity and moment of inertia of the blade. Therefore, to investigate the effect of the gyro moment on the motion of the FOWT, two types of experiment were carried out in a water tank using a 1/360 scale model of a prototype FOWT. Firstly, the interaction between the rotary motion of the wind turbine blade and the dynamic motion of the SPAR-type FOWT was studied at small angles of inclination in regular waves. Secondly, the interaction between the change of rotational speed as well as moment of inertia of the blade and the motion of the FOWT was studied. In this paper, numerical calculations have been carried out using potential theory based on the 3D panel method. Finally, the experimental results are compared with the results of numerical simulation and findings are discussed. DOI: http://dx.doi.org/10.3329/jname.v9i1.10732 Journal of Naval Architecture and Marine Engineering 9(2012) 67-79
Melting heat transfer in a nanofluid boundary layer on a stretching circular cylinder
Authors: Gorla Rama Subba Reddy , Chamkha Ali J. , Al-Meshaiei Eisa
Published: June 2012

A boundary layer analysis is presented for the warm, laminar nanoliquid fluid flow to a melting cylindrical surface moving parallel to a uniform stream. The resulting system of non-linear ordinary differential equations is solved numerically using Runge-Kutta method with shooting techniques. Numerical results are obtained for the velocity, temperature and concentration distributions, as well as the friction factor, local Nusselt number and local Sherwood number for several values of the parameters, namely, the Reynolds number, Prandtl number and nanofluid parameters. The obtained results are presented graphicallyand in tabular form and the physical aspects of the problem are discussed.DOI: http://dx.doi.org/10.3329/jname.v9i1.7416 Journal of Naval Architecture and Marine Engineering 9(2012) 1-10
Liquid sloshing dynamics in a barge carrying container subjected to random wave excitation
Authors: Thuvanismail Nasar , Sannasi Sannasiraj , Vallam Sundar
Published: June 2012

The sloshing phenomenon of liquid in a partially filled tank mounted rigidly on a barge exposed to random beam waves has been investigated through a well controlled experimental program. Four relative liquid depths, (liquid depth, hs/ length of tank, l) of 0.163, 0.325, 0.488 and 0.585 were considered for the tests. The sloshing oscillation was measured along the length of the tank at predefined locations. The effect of variation of the peak wave excitation frequency on the sloshing oscillation in the frequency domain is studied. The dominant energy is found to be concentrated around lowest nth sloshing mode frequency and, secondary peaks are observed at higher order sloshing frequencies. Odd modes contributions are dominating even modes irrespective of the excitation peak frequency. The sacrifice of second mode is observed while the excitation peak frequency is closer to its primary resonance. DOI: http://dx.doi.org/10.3329/jname.v9i1.7600 Journal of Naval Architecture and Marine Engineering 9(2012) 43-65
Laminar Free and Forced magnetoconvection through an Octagonal Channel with a Heat Generating Circular Cylinder
Authors: Nasrin Rehena , Alim MA
Published: June 2012

In this paper, hydromagnetic flow and thermal behaviors of fluid on free and forced convection inside an octagonal vertical channel are investigated. The channel consists of a centered heat generating hollow solid circular cylinder. The vertical and inclined walls of the octagon are insulated perfectly. The input and output opening are situated at the bottom and top surface respectively. The octagon is filled with electrically conducting fluid. The integral forms of the governing equations are solved numerically using Galerkins Weighted Residual Finite Element method. Computational domains are divided into finite numbers of body fitted control volumes with collocated variable arrangement. Results are presented in the form of average Nusselt number (Nu) and maximum temperature (?max) of the fluid for a selected range of magnetic parameter Hartmann number Ha (0 - 50). Streamlines and isothermal lines are also displayed for three different values (0.1, 1 and 10) of convection parameter (Ri) and for a fluid having magnetic field. The results indicate that the highest Nu and ?max are found for the absence of Ha in all convection regions. DOI: http://dx.doi.org/10.3329/jname.v9i1.7891 Journal of Naval Architecture and Marine Engineering 9(2012) 25-34
Jordan I. Kosberg (ed.) (2007). Abuse of Older Men. New York: Haworth Press, 202 pp. ISBN 978 0 7890 3541 7 (paperback)
Authors: Melchiorre M. Gabriella
Published: July 2012

Not Available.
2-(2-Imino-1-methylimidazolidin-4-ylidene)hydrazinecarbothioamide
Authors: Al-Amiery Ahmed A. , Kadhum Abdul Amir H. , Mohamad Abu Bakar
Published: July 2012

A new thiosemicarbazone, 1-methyl-2-imino-N-(methanethialdiamine)-yl-4-iminoimidazolidin was synthesized and its UV-VIS, IR, and NMR spectroscopic data and CHN analysis are presented.
Rhizonin A from Burkholderia sp. KCTC11096 and Its Growth Promoting Role in Lettuce Seed Germination
Authors: Kang Sang-Mo , Khan Abdul Latif , Hussain Javid , Ali Liaqat , Kamran Muhammad , Waqas Muhammad , Lee In-Jung
Published: July 2012

We isolated and identified a gibberellin-producing Burkholderia sp. KCTC 11096 from agricultural field soils. The culture filtrate of plant growth promoting rhizobacteria (PGPR) significantly increased the germination and growth of lettuce and Chinese cabbage seeds. The ethyl acetate extract of the PGPR culture showed significantly higher rate of lettuce seed germination and growth as compared to the distilled water treated control. The ethyl acetate fraction of the Burkholderia sp. was subjected to bioassay-guided isolation and we obtained for the first time from a Burkholderia sp. the plant growth promoting compound rhizonin A (1), which was characterized through NMR and MS techniques. Application of various concentrations of 1 significantly promoted the lettuce seed germination as compared to control.
Pharmacological Evaluation of LiuWei Zhuanggu Granules in Rats
Authors: Zhu Haiming , Ding Liang , Xiao Haijun , Ni Weifeng , Xue Feng , He Zhiming
Published: July 2012

Many commonly consumed foods, herbs and spices contain a complex array of naturally occurring bioactive molecules called phytochemicals, which may confer health benefits. In this study, the impact of LiuWei Zhuanggu Granules (LWZGG) on mineral metabolism in osteopenia development was evaluated. Results showed that serum estrogen, bone gla protein (BGP), and calcitonin (CT) levels, bone Ca, Zn and Cu levels, femur, lumbar vertebrae and trabecular bone density, tibia maximum stress and maximum bending strength were increased, and serum parathyroid hormone (PTH), serum and urine Ca, Zn and Cu levels were decreased in rat bone. It can be concluded that LWZGG is useful to improve bone quality in ovariectomized (OVX) rats.
Particle-Dependent Deformations of Lorentz Symmetry
Authors: Amelino-Camelia Giovanni
Published: July 2012

I report results suggesting that it is possible to introduce laws of relativistic kinematics endowing different types of particles with suitably different deformed-Lorentz-symmetry properties. I also consider some possible applications of these results, among which I highlight those relevant for addressing a long-standing challenge in the description of composite particles, such as atoms, within quantum-gravity-inspired scenarios with Planck-scale deformations of Lorentz symmetry. Some of the new elements here introduced in the formulation of relativistic kinematics appear to also provide the starting point for the development of a correspondingly novel mathematical formulation of spacetime-symmetry algebras.
Limited carbon and mineral nutrient gain from mycorrhizal fungi by adult Australian orchids
Authors: Sommer Janine , Pausch Johanna , Brundrett Mark C. , Dixon Kingsley W. , Bidartondo Martin I. , Gebauer Gerhard
Published: July 2012

• Premise of the study: In addition to autotrophic and fully mycoheterotrophic representatives, the orchid family comprises species that at maturity obtain C and N partially from fungal sources. These partial mycoheterotrophs are often associated with fungi that simultaneously form ectomycorrhizas with trees. This study investigates mycorrhizal nutrition for orchids from the southwestern Australian biodiversity hotspot.

• Methods: The mycorrhizal fungi of 35 green and one achlorophyllous orchid species were analyzed using molecular methods. Nutritional mode was identified for 27 species by C and N isotope abundance analysis in comparison to non‐orchids from the same habitat. As a complementary approach, 13CO2 pulse labeling was applied to a subset of six orchid species to measure photosynthetic capacity.

• Key results: Almost all orchids associated with rhizoctonia‐forming fungi. Due to much higher than expected variation within the co‐occurring nonorchid reference plants, the stable isotope approach proved challenging for assigning most orchids to a specialized nutritional mode; therefore, these orchids were classified as autotrophic at maturity. The 13CO2 pulse labeling confirmed full autotrophy for six selected species. Nonetheless, at least three orchid species (Gastrodia lacista, Prasophyllum elatum, Corybas recurvus) were identified as nutritionally distinctive from autotrophic orchids and reference plants.

• Conclusions: Despite the orchid‐rich flora in southwestern Australia, partial mycoheterotrophy among these orchids is less common than in other parts of the world, most likely because most associate with saprotrophic fungi rather than ectomycorrhizal fungi.
FTIR nanobiosensors for Escherichia coli detection
Authors: Mura Stefania , Greppi Gianfranco , Marongiu Maria Laura , Roggero Pier Paolo , Ravindranath Sandeep P , Mauer Lisa J , Schibeci Nicoletta , Perria Francesco , Piccinini Massimo , Innocenzi Plinio , Irudayaraj Joseph
Published: July 2012

Infections due to enterohaemorrhagic E. coli (Escherichia coli) have a low incidence but can have severe and sometimes fatal health consequences, and thus represent some of the most serious diseases due to the contamination of water and food. New, fast and simple devices that monitor these pathogens are necessary to improve the safety of our food supply chain. In this work we report on mesoporous titania thin-film substrates as sensors to detect E. coli O157:H7. Titania films treated with APTES ((3-aminopropyl)triethoxysilane) and GA (glutaraldehyde) were functionalized with specific antibodies and the absorption properties monitored. The film-based biosensors showed a detection limit for E. coli of 1 × 102 CFU/mL, constituting a simple and selective method for the effective screening of water samples.