bluuebunny/crossref_metadata_2025 huggingface dataset:
Behavior of cement-stabilized clay reinforced with nylon fiber
Authors: Estabragh A.R. , Namdar P. , Javadi A.A.
Published: February 2012

ABSTRACT: A series of experiments were carried out to investigate the behavior of cement-stabilized fiber-reinforced clay with different cement and fiber contents. Three groups of tests were conducted, on: (1) reinforced samples with four different fiber contents (0.5%, 0.75%, 1% and 1.25%); (2) cement-stabilized samples with three different cement contents (5%, 8% and 10%); and (3) cement-stabilized, fiber-reinforced samples with the same fiber contents as the uncemented reinforced samples. Unconfined compression tests (UCT) were carried out on the uncemented samples. These UCT tests were also conducted on the cement-stabilized samples with and without fiber inclusions after 3, 7, 14 and 28 days of curing time. The results indicated that the inclusion of fibers within uncemented and cement-stabilized soil caused an increase in the unconfined compressive strength and axial strain at failure, and changed the brittle behavior of the cement-stabilized soil to a more ductile behavior. It was also shown that the mechanical characteristics of the soil–cement–fiber mixtures are functions of fiber content and curing time.
Manufacturing of welded joints with realistic defects
Authors: Consonni M , Wee Chen Fun , Schneider C
Published: February 2012

Intentional weld defect or flaw specimens can be required for training purposes, developing new non-destructive testing techniques, qualifying non-destructive testing procedures, obtaining mechanical property data and in support of safety cases. The single most important criterion in
producing defects or imperfections is that they must accurately simulate the flaws that can occur in welded components and structures. For this reason, in certain applications, saw cuts or machined slots, which are more easily detected, may not be considered acceptable as planar imperfections/defects
for the purpose of NDT training or validation. Therefore, TWI has developed techniques for producing realistic imperfections/defects and, in the case of cracks, the desired morphology, including roughness and angles of tilt and skew to the surface. This paper describes the techniques used
to obtain the abovementioned defects and, for the most commonly required defect types, the qualification procedure used by TWI. This consists of inspecting by surface NDT methods, ultrasonic or radiographic inspection and/or sectioning to demonstrate that the dimensional tolerance of the simulated
imperfections (ie actual size of the imperfection versus required size) can be generally guaranteed to within ±0.5 mm in through-wall extent and ±1 mm in length.
Pulse-compression ultrasonic technique for the inspection of forged steel with high attenuation
Authors: Ricci M , Senni L , Burrascano P , Borgna R , Neri S , Calderini M
Published: February 2012

The application of a pulse-compression technique for the ultrasonic inspection of forged steel structures with high attenuation and large dimensions is presented. The performance of such a technique is theoretically analysed and validated experimentally by exploiting linear chirp signals.
Based on the preliminary results, it is found that the strategy achieves a significant enhancement of the signal-to-noise ratio and then of the inspection capability. A further increase in performance can be achieved by exploiting signal processing and by developing proper hardware.
EMDR Treatment of Obsessive-Compulsive Disorder: Preliminary Research
Authors: Marr John
Published: February 2012

This article reports the results of two experiments, each investigating a different eye movement desensitization and reprocessing (EMDR) protocol for obsessive-compulsive disorder (OCD) and each with two young adult male participants with long-standing unremitting OCD. Two adaptations of Shapiro’s (2001) phobia protocol were developed, based on the theoretical view that OCD is a self-perpetuating disorder, with OCD compulsions and obsessions and current triggers reinforcing and maintaining the disorder. Both adaptations begin by addressing current obsessions and compulsions, instead of working on past memories; one strategy delays the cognitive installation phase; the other uses mental video playback in the desensitization of triggers. The four participants received 14–16 one-hour sessions, with no assigned homework. They were assessed with the Yale-Brown Obsessive Compulsive Scale (Y-BOCS), with scores at pretreatment in the extreme range (mean = 35.3). Symptom improvement was reported by participants after 2 or 3 sessions. Scores at posttreatment were in the subclinical/mild range for all participants (mean = 8.5). Follow-up assessments were conducted at 4–6 months, indicating maintenance of treatment effects (mean = 7.5). Symptom reduction was 70.4% at posttreatment and 76.1% at follow-up for the Adapted EMDR Phobia Protocol and 81.4% at posttreatment and at follow-up for the Adapted EMDR Phobia Protocol with Video Playback. Theoretical implications are discussed, and future research is recommended.
Adaptive Information Processing and a Systemic Biopsychosocial Model
Authors: Cotraccia Anthony J.
Published: February 2012

Shapiro’s (2001) adaptive information processing (AIP) model portrays an innate healing system hypothesized to be composed of neurophysiological mechanisms of action causally related to the resolution of disturbing life experiences. The author expands the model to include psychosocial mechanisms and suggests that a model of a biopsychosocial system can best depict causal properties related to positive outcomes of eye movement desensitization and reprocessing (EMDR). Teleofunctionalist and evolutionary perspectives are applied: the first, to explain the inclusion of the psychological and social features highlighted in the updated model; the second, to support the hypothesis that AIP is a goal of the human attachment system. It is posited that bonding, following a disturbing life experience, facilitates the access of information related to previous states, thus allowing an update of self/world models. These interactions are analogous to psychotherapeutic encounters, with multiple levels of information processing at subpersonal, personal, and interpersonal levels. Analysis of the causal properties of personal and interpersonal levels supports a broader understanding of AIP’s scope in conceptualizing psychopathology and informing treatment applications and research.
EMDR Target Time Line
Authors: Lombardo Marina
Published: February 2012

This Clinical Q&A section responds to a question about organizing a client’s historical information into a targeting sequence within a treatment plan that is consistent with Shapiro’s (2001) three-pronged protocol. The procedures for identifying and prioritizing treatment eye movement desensitization and reprocessing (EMDR) targets are reviewed in the context of Shapiro’s theoretical model, and various time line models are summarized. The author then presents her EMDR TargetTime Line, which provides a practical simple visual tool for documenting past, present, and future aspects of the presenting problem. It allows the therapist to note if disturbing past experiences present around a core theme, such as negative cognitions, physical symptoms, or situations/persons/circumstances. Three clinical cases are used to illustrate the form’s application with various types of treatment targets.
On the distribution of a linear sequence associated to sum of divisors evaluated at polynomial arguments
Authors: Hassani Mehdi
Published: February 2012

Following the recent method of Deshouillers and the author in the theory of
distribution modulo 1, we show that the sequence with general term bn =
?m?n(m2 + 1)/?(m2 + 1) is dense modulo 1.
Caries-preventive Activity of Fluoride-containing Resin-based Desensitizers
Authors: Sohn S , Yi K , Son HH , Chang J
Published: February 2012

Objective

The purpose of this study was to evaluate the effects of different desensitizing agents on the prevention of root caries when applied to root surfaces.

Materials and Methods

Thirty human roots were sectioned into quarters with a 3 × 4 mm window. A desensitizer (VX, Clinpro™ XT Varnish; SP, Seal & Protect®; or PB, Clearfil™ Protect Bond) was applied to three of the quarters in each window. Teeth were stored separately in water for one day, 30 days, or 60 days. The remaining quarter, without the application of desensitizer, served as a control. After storage in water, all specimens were subjected to pH cycling. Scanning electron microscopy was used to observe the demineralization bands created on the subsurface layer. The weight percentages of fluorine (F), silica, and calcium (Ca) were determined using electron probe microanalysis to quantify the elemental distributions in the root dentin. The concentrations of F released during a pH cycling were measured.

Results

For the control group, the average lesion depth was 18.92 ± 5.42 μm, and the average Ca loss was 15.66% ± 6.80% in the superficial layer and 30.44% ± 9.61% in the subsurface layer. No Ca loss occurred in the desensitizer-treated groups. All desensitizing agents remained intact for at least 60 days. F levels were increased in the hybrid layer but not in the subhybrid area. Outward release of F diminished with time.

Conclusion

The F-containing resin-based desensitizers protected exposed root surfaces from demineralization. F liberated from the desensitizers was detected only at minimal levels.
Effect of Ceramic Veneer Opacity and Exposure Time on the Polymerization Efficiency of Resin Cements
Authors: Archegas LRP , de Menezes Caldas DB , Rached RN , Soares P , Souza EM
Published: February 2012

The objective of this study was to determine the degree of conversion (DC), hardness (H), and modulus of elasticity (E) of a dual-cured resin cement, a light-cured resin cement, and a flowable resin cured through opaque or translucent ceramic with different exposure times. RelyX ARC (dual), RelyX Veneer (light-cured), and Filtek Z350 Flow resin specimens 0.5 mm thick were cured for 40, 80, and 120 seconds through 1-mm thick translucent or opaque feldspathic ceramic disks (n=10). The specimens were stored at 37°C for 24 hours. Half of each specimen was used to test the DC and the other half to test H and E. The DC was determined in a Fourier transform infrared spectrometer in absorbance mode at peaks of 1638 cm−1 and 1610 cm−1. H and E were determined using nanoindentation with one loading cycle and a maximum load of 400 mN. The data were analyzed with three-way analysis of variance (ANOVA), the Games-Howell test, and the Pearson correlation test (α=0.05). Statistically significant differences were found for all three factors (material, opacity, and exposure time), as well as interaction between them. The opaque ceramic resulted in lower DC, H, and E than the translucent ceramic for an exposure time of 40 seconds. An exposure time of 120 seconds resulted in a similar DC for all materials, irrespective of the opacity of the ceramic. Materials cured for 120 seconds had higher H and E than those cured for 40 seconds. The exposure time and opacity of the ceramic exerted an influence on the DC, H, and E of the materials evaluated.
Proximal Contact Tightness Between Direct-composite Additions in the Posterior Dentition: An In Vitro Investigation
Authors: Wolff D , Hahn P , Ding P , Maier-Kraus T , Frese C , Doerfer C , Staehle HJ
Published: February 2012

Purpose

The aim of the study was to test whether a novel three-step matrix technique for posterior direct-composite additions creates sufficiently strong proximal contacts.

Materials and Methods

Contact tightness was measured between direct-composite additions and between original teeth on a model. Therefore, the frictional forces required to remove a straight, 0.05-mm-thick, metal matrix band inserted between adjacent teeth and held by a universal testing machine (Zwicki, Zwick GmbH, Ulm, Germany) were recorded. Measurements were taken at three time points to carry out reference analysis: at baseline, after removal of the maxillary right second premolar (tooth #15) to simulate a diastema, and after closure of the diastema by inserting two direct-composite additions with the three-step matrix technique on the maxillary right first premolar (tooth #14) and first molar (tooth #16). Measurements were performed in the maxillary right (first) and left (second) quadrants to document sagittal displacement.

Results

The original contact tightness values were between 1.65 ± 0.88 N and 3.05 ± 0.60 N in the first quadrant and between 1.23 ± 0.51 N and 2.18 ± 0.43 N in the second quadrant. After removal of tooth 15, values decreased significantly in the first quadrant and insignificantly in the second. After reconstruction, the contact tightness between teeth 14 and 16 was significantly stronger (tighter) (3.20 ± 0.80 N) than the originally measured contact tightness between teeth 14 and 15 (2.86 ± 0.64 N) and teeth 15 and 16 (1.65 ± 0.88 N) (p=0.006 and 0.001, respectively).

Conclusions

Within the limitations of an in vitro investigation, this study has shown that by using a novel, three-step matrix technique, direct posterior composite additions can form sufficiently tight proximal contacts.
Shear Bond Strength of Different Repair Systems to Titanium After Water Aging
Authors: Haneda IG , Fonseca RG , Abi-Rached FO , Adabo GL , Cruz CAS
Published: February 2012

This study evaluated the shear bond strength (SBS) and stability of commercially pure titanium (CP Ti)/repair material interfaces promoted by different repair systems. One hundred CP Ti cast discs were divided into five repair system groups: 1) Epricord (EP); 2) Bistite II DC (BT); 3) Cojet (CJ); 4) Scotchbond Multi-Purpose Plus (SB) (control group); and 5) Cojet Sand plus Scotchbond Multi-Purpose Plus (CJSB). The specimens were stored in distilled water for 24 hours at 37°C, thermal cycled (5000 cycles, 5°-55°C) and stored under the same conditions for either 24 hours or six months (n=10). SBS was tested and the data were analyzed by two-way analysis of variance (ANOVA) and Tukey test (α=.05). Failure mode was determined with a stereomicroscope (20×). The repair system, storage time, and their interaction significantly affected the SBS (p<0.001). At 24 hours, CJSB exhibited the highest SBS value, followed by CJ. At six months, these two groups had similar mean SBS (p>0.05) and higher means in comparison to the other groups. For both storage times, BT presented the lowest SBS, while the EP and SB groups did not differ significantly from one another (p>0.05). There were no significant differences in SBS between the storage times for the groups EP and CJ (p>0.05). The groups BT, SB, and CJSB showed 100% adhesive failure, irrespective of storage time. The CJSB group showed the highest SBS at both storage times. At six months, the CJ group exhibited a similar SBS mean value when compared to the CJSB group. Water storage adversely affected the groups BT, SB (control group), and CJSB. Considering SBS values, stability, and the failure mode simultaneously, the CJ group showed the best CP Ti repair performance.
Odd H-depth and H-separable extensions
Authors: Kadison Lars
Published: February 2012

Let C
n(A,B) be the relative Hochschild bar resolution groups of a subring B ⊆ A. The subring pair has right depth 2n if C
n+1(A,B) is isomorphic to a direct summand of a multiple of C
n(A,B) as A-B-bimodules; depth 2n + 1 if the same condition holds only as B-B-bimodules. It is then natural to ask what is defined if this same condition should hold as A-A-bimodules, the so-called H-depth 2n − 1 condition. In particular, the H-depth 1 condition coincides with A being an H-separable extension of B. In this paper the H-depth of semisimple subalgebra pairs is derived from the transpose inclusion matrix, and for QF extensions it is derived from the odd depth of the endomorphism ring extension. For general extensions characterizations of H-depth are possible using the H-equivalence generalization of Morita theory.
Hardware-in-the-loop implementation for an active heave compensated drawworks
Authors: Muraspahic Sanin , Gu Peter , Farji Lawk , Iskandarani Yousef , Shi Peng , Karimi Hamid
Published: February 2012

This paper presents the setup and running of a hardware-in-loop (HIL) simulation for an active heave compensated (AHC) draw-works. A simulation model of the draw-works is executed on a PC to simulate the AHC draw-works with a physical PLC. The PLC (ET200S) is configured with a controller architecture that regulates the motor angular displacement and velocity through actuation of the servo valves. Furthermore, a graphical user interface is developed for operation of the AHC system. The HIL test allowed tuning of the physical controller in terms of heave stabilization and positioning. The conclusion after the testing is a PLC which is ready for operation without necessitating the use a physical prototype of the process.
Boxing and mixed martial arts: preliminary traumatic neuromechanical injury risk analyses from laboratory impact dosage data
Authors: Bartsch Adam J. , Benzel Edward C. , Miele Vincent J. , Morr Douglas R. , Prakash Vikas
Published: February 2012

Object

In spite of ample literature pointing to rotational and combined impact dosage being key contributors to head and neck injury, boxing and mixed martial arts (MMA) padding is still designed to primarily reduce cranium linear acceleration. The objects of this study were to quantify preliminary linear and rotational head impact dosage for selected boxing and MMA padding in response to hook punches; compute theoretical skull, brain, and neck injury risk metrics; and statistically compare the protective effect of various glove and head padding conditions.

Methods

An instrumented Hybrid III 50th percentile anthropomorphic test device (ATD) was struck in 54 pendulum impacts replicating hook punches at low (27–29 J) and high (54–58 J) energy. Five padding combinations were examined: unpadded (control), MMA glove–unpadded head, boxing glove–unpadded head, unpadded pendulum–boxing headgear, and boxing glove–boxing headgear. A total of 17 injury risk parameters were measured or calculated.

Results

All padding conditions reduced linear impact dosage. Other parameters significantly decreased, significantly increased, or were unaffected depending on padding condition. Of real-world conditions (MMA glove–bare head, boxing glove–bare head, and boxing glove–headgear), the boxing glove–headgear condition showed the most meaningful reduction in most of the parameters. In equivalent impacts, the MMA glove–bare head condition induced higher rotational dosage than the boxing glove–bare head condition. Finite element analysis indicated a risk of brain strain injury in spite of significant reduction of linear impact dosage.

Conclusions

In the replicated hook punch impacts, all padding conditions reduced linear but not rotational impact dosage. Head and neck dosage theoretically accumulates fastest in MMA and boxing bouts without use of protective headgear. The boxing glove–headgear condition provided the best overall reduction in impact dosage. More work is needed to develop improved protective padding to minimize linear and rotational impact dosage and develop next-generation standards for head and neck injury risk.
Physiology of seed yield in mungbean: growth and dry matter production
Authors: Mondal MMA , Fakir MSA , Islam M Nurul , Samad MA
Published: February 2012

Growth rate of mungbean was very slow during the vegetative phase in all the four genotypes. A relatively smaller portion of total dry matter (TDM) was produced before flower initiation and the bulk of it after anthesis. The maximum crop growth rate (CGR) was observed due to maximum leaf area (LA) development during the pod filling stage in all the genotypes. LA and CGR contributed to the superior TDM production. It appeared that a high yielding mungbean genotype should possess larger LA, high TDM production ability, superior CGR at all the growth stages, high relative growth rate and net assimilation rate at the vegetative stage as superior yield components. Key words: Seed yield; Mungbean; Growth; Dry matter DOI: http://dx.doi.org/10.3329/bjb.v40i2.9768   Bangladesh J. Bot. 40(2): 133-138, 2011 (December)
Improvement of carboxymethyl cellulase production from Chaetomium cellulolyticum NRRL 18756 by mutation and optimization of solid state fermenttion
Authors: Fawzi Eman M , Hamdy Hossam S
Published: February 2012

Cellulase producing fungus Chaetomium cellulolyticum NRRL 18756 was subjected to various doses of gamma irradiation to enhance the production of the industrially important enzyme carboxymethyl cellulase (CMCase). Among all the mutants tested, M-7 obtained through 0.5 KGy irradiation showed highest extracellular CMCase production which is 1.6-fold higher than that of the wild type. Optimal conditions for the production of CMCase by the mutant fungal strain using solid-state fermentation were examined. The optimized medium consisted of sugarcane bagasse supplemented with 1% (w/w) peptone, 2.5mM MgSO4, and 0.05% (v/w) Tween 80. Optimal moisture content and initial pH was 40% (v/w) and 5.0-6.5, respectively. The medium was fermented at 40° C for 4 days. The resulting CMCase yield was 4.0-fold more than that of the wild type strain grown on the basal wheat bran medium. Some characteristics of partially purified CMCase from the mutant and wild type of C. cellulolyticum were investigated. The partially purified mutant CMCase was more stable than the wild type CMCase. Thus, the higher thermostability of mutant CMCase makes it a potential candidate for commercial and industrial process. Key words: Chaetomium cellulolyticum; Carboxymethyl cellulase; Mutation; Optimization; Solid state fermentation DOI: http://dx.doi.org/10.3329/bjb.v40i2.9769   Bangladesh J. Bot. 40(2): 139-147, 2011 (December)
Effects of soil water deficit on leaf nitrogen, chlorophylls and spad chlorphyll meter reading on growth stages of soybean
Authors: Ahmed Shakil Uddin
Published: February 2012

Soybean leaf Nitrogen (N) status correlated linearly with the amount of chlorophylls and SCMR at flowering stage in response to water deficit levels. In addition, SCMR showed significant positive correlation with chlorophylls at flowering stage. Grain yield significantly correlated to the leaf nitrogen as well as to the chlorophylls and SCMR at flowering stage in response to water deficit levels. These relationships indicated that the water stress decreased leaf nitrogen, chlorophylls and SCMR which in turn caused decreased grain yield of soybean. The results from the study suggest that, flowering stage is the best time for prediction on the adverse effects of water stress on leaf nitrogen assimilation, chlorophylls and SCMR on potential yielding ability of soybean.Key words: Soil water deficit; Leaf nitrogen; Chlorophyll (a+b); Growth stages; Soybean DOI: http://dx.doi.org/10.3329/bjb.v40i2.9773   Bangladesh J. Bot. 40(2): 171-175, 2011 (December)
Disease reaction of potato germplasms and true potato seeds against Rhizoctonia solani Kuhn
Authors: Khandaker Md Maniruzzaman , Khair Abul , Bhuiyan Md Khurshed Alam
Published: February 2012

Screening of 25 potato germplasms against Rhizoctonia solani BTB115 in artificially infested field condition were carried out. No germplasm was found resistant to R. solani. Only six germplasms appeared to be moderately resistant. Cardinal, Diamant and Heera were found as highly susceptible varieties. True potato seed BARI TPS1 was tested against two virulent isolates of R. solani DK64 and BTB115. Only 21% and 29% resistant seedlings against the DK64 and BTB115 isolates, respectively were obtained compared to 85% seedlings in control.Keywords: Germplasm; Potato; TPS; Rhizoctonia solani   DOI: http://dx.doi.org/10.3329/bjb.v40i2.9777   Bangladesh J. Bot. 40(2): 193-196, 2011 (December)
Tree diversity as affected by salinity in the Sundarban Mangrove Forests, Bangladesh
Authors: Ahmed Ashfaque , Aziz Abdul , Khan AZM Nowsher Ali , Islam Mohammad Nurul , Iqubal Kazi Farhed , Nazma M , Islam Md Shafiqul
Published: February 2012

A botanical expedition to the Sundarban Mangrove Forests (SMF) in March, 2010 was made to study the tree diversity and their abundance as affected by salinity gradient. In six quadrats of 25m × 25m each, distributed in all four Ranges, a total of eight tree species were recorded. A maximum number of five species occurred in relatively low saline sites. Tree zonation dynamics of the forests along salinity gradient revealed an increase in the number of Ceriops decandra (goran), a salt tolerant plant in the north-eastern parts of the SMF which was dominated by Heritiera fomes (sundri), a freshwater loving plant in 1960’s. Highest importance value index (IVI) was recorded for C. decandra, which was present in all sites, except Moroghodra, a freshwater zone in Nalianala (Khulna) Range. Comparison of the Landsat images of Nalianala and Chandpai Ranges during 1989, 2000 and 2010 revealed a decreased tendency of dominance of H. fomes in the two Ranges but increased tendency of Bruguiera sexangula (kankra), Excoecaria agallocha (gewa) and Sonneratia apetala (keora). Total tree cover in 2010 decreased by about 3% from that of 1989. The changes in the tree composition have been attributed to increased salinity. The changes in the physiography and tree composition of the two Ranges between 2000 - 1989 were considerable. Key words: Tree zonation; Salinity; Remote Sensing; GIS; Heritera fomes; Ceriops decandra DOI: http://dx.doi.org/10.3329/bjb.v40i2.9778   Bangladesh J. Bot. 40(2): 197-202 , 2011 (December)
Effects Of Naphthalene Acetic Acid On Nutrient Uptake By Two Varieties Of Rice (Oryza Sativa L.)
Authors: Adam AMM Golam , Jahan Nargis , Hoque Sirajul
Published: February 2012

An experiment was conducted to find out the responses of two varieties of rice to NAA on nitrogen (N), phosphorus (P), and potassium (K) uptake by straw and root at three different stages and NPK concentrations in grains. Nitrogen, P and K uptake by both straw and root were found to increase and decrease depending on the concentration of NAA and also on the stages of development. Uptake of NPK were recorded higher at the tillering stage and at harvest with a few exceptions, whereas, lower uptake at the flowering stage in most cases. However, NPK concentrations in grains were favourly influenced by 200 ppm NAA in both the varieties except K concentration of BRRI dhan?29 (V1). Variations among the treatments were non?significant in the majority of cases. Out of the two varieties BRRI dhan?29 (V1) showed comparatively more positive response to NAA that BRRI dhan?50 (V2). DOI: http://dx.doi.org/10.3329/dujbs.v21i1.9740 DUJBS 2012 21(1): 9-15
Bacterial Abundance In Indian White Shrimp, Penaeus Indicus Collected From Two Different Market Conditions Of Dhaka City
Authors: Nilla Saima Sharif , Mustafa Md Ghulam , Ahsan Dewan Ali , Rahman Khan Md Mahmudur , Rahman Khan Md Anisur
Published: February 2012

A study was accomplished in regard to the microbiological abundance in the muscle of Indian White Shrimp (Penaeus indicus) collected from three departmental chain shops and three local markets of Dhaka metropolitan city has been assessed in terms of total bacterial count (TBC), coliform and Salmonella? Shigella (SS) counts. The TBC ranged from 2.1 ± 0.20 × 104 to 4.7 ± 0.50 × 105 cfu/g for departmental shop frozen shrimp and 4.2 ± 0.45 × 106 to 1.3 ± 0.50 × 108 cfu/g for local market iced shrimp. The total coliform count ranged between 1.6 ± 0.20 × 102 and 2.1 ± 0.25 × 103 cfu/g for the chain shop frozen shrimp and 2.8 ± 0.30 × 103 and 7.8 ± 0.50 × 105 cfu/g for the retail market iced shrimp. Furthermore, the Salmonella?Shigella (SS) count for chain shop frozen and local market iced shrimp varied from 0.5 ± 0.0 × 102 to 1.3 ± 0.10 × 102 cfu/g and 0.7 ± 0.0 × 102 to 2.1 ± 0.25 × 102 cfu/g, respectively. Presence of Vibrio spp. was confirmed in 11 samples (5 from departmental shops and 6 from local markets). In case of antibiotic sensitivity pattern of the indicator and pathogenic isolates, all of them were resistant to penicillin and bacitracin. Most of the isolates were sensitive to streptomycin, chloramphenicol and kanamycin. The results confirmed that the samples of local markets contained high pathogenic bacterial load which are supposed to be threat to food safety creating food borne diseases. DOI: http://dx.doi.org/10.3329/dujbs.v21i1.9741 DUJBS 2012 21(1): 29-38
The Agricultural Potentiality Of Some Wetland Soils Under Sylhet Basin Of Bangladesh
Authors: Uddin MJ , Mohiuddin ASM , Kamal ATMM , Hossain M Anwat
Published: February 2012

An investigation was conducted to study some representative wetland soils under Sylhet basin of Bangladesh with a view to evaluating the agricultural potentiality and its management options. The soils are nutritionally very productive. Soil textural and other environmental conditions are more appropriate for rice production. The contents of nitrogen and boron is low. Probably, the denitrification process leads to the loss of nitrogen in this basin soils. Other nutrients seem to be at a balanced condition for the successful growth of deep water rice. Boro and deep water T. Aman were introduced in the study area in recent times. Availability of irrigation water in the dry periods and shallow inundation level in the monsoon may be the main cause of such cropping pattern. Due to the changes in landuse, demand for nitrogen and phophorus fertilizer have increased. pH value stands near neutral which indicates the agricultural viability of the soils. The present investigations ascertained that the study area including the wetland of Bangladesh can be economically exploited through appropriate nutrient management without any extra agro?chemical use. DOI: http://dx.doi.org/10.3329/dujbs.v21i1.9743 DUJBS 2012 21(1): 39-46
The Importance Of Pre-Hatching Paternal Care On Offspring Fitness In Burying Beetle, Nicrophorus Vespilloides Herbst.
Authors: Musa Sharmin
Published: February 2012

A male-removal experiment was performed to determine if the value of male parental care depended on the timing of the help. In the experiment male parent was removed before the carcass was prepared for breeding, after partial carcass preparation, after complete carcass preparation, before direct care for the larvae and males were allowed to disperse naturally after caring for the larvae. It was found that where the male provided complete pre-hatching care or both preand post-hatching care offspring were larger and in better condition. Mass of offspring at eclosion was affected by male removal (F3,1266 = 5.087, p = 0.002) though size of offspring was not affected by the treatment group. Complete prehatching care had a positive effect on development compared to limited care (F3, 1267 = 8.501, p < 0.000) but this effect disappeared if males remained after the larvae hatched. Larval survivorship did not vary among treatments (F3,122 = 0.531, p = 0.662).
Distribution Of Helminth Parasites In Size Groups And Organs Of Hilsa Shad, Tenualosa Ilisha
Authors: D'Silva Joseph , Bhuiyan Aminul Islam , Bristow Glenn A
Published: February 2012

Demographic parameters such as prevalence, intensity, abundance etc. of the component parasites of hilsa (Tenualosa ilisha) collected from 11 sites under 3 different habitats all over Bangladesh were calculated as a function of host size, sex and organ of infection. Organ preference of component parasite species did not show any variation in the hilsa collected from the three ecological habitats. All the trematodes were found exclusively in cardiac stomach and intestine. Nematodes were less organ specific. Abundance of total parasites in cardiac stomach and intestine were not significantly different from each other but that of stomach and mesenteries were significantly different from each other and from cardiac stomach or mesentery. In freshwater hilsa differences between most of the lower length groups were not significant (p > 0.05). In brackish water hilsa parasite burden were significantly different between length groups. In marine hilsa mean parasites burden in different length classes were not significant (p > 0.05). DOI: http://dx.doi.org/10.3329/dujbs.v21i1.9745 DUJBS 2012 21(1): 55-65
Prevalence Of Plasmodium Falciparum And P. Vivax Infection In Malaria Patients Of Matiranga, Khagrachhari
Authors: Elahi Rubayet , Khanum Hamida , Alam Mohammad Shafiul , Mustafa Shariar , Podder Milka Patracia , Haque Rashidul
Published: February 2012

The investigation was performed to study the different growth stages of malarial parasite found in the peripheral blood of malaria patients of Matiranga, Khagrachhari. Rapid diagnostic test (RDT) was used to screen positive patient. The early trophozoite stages were measured 1.3 ? 1.6 μm, late trophozoites 2.5 ? 2.9 μm in diameter, microgametes 9?10 μm by 2 ? 3 μm and macrogametes 11 ? 12 μm by 2 ? 3 μm for Plasmodium falciparum. The early trophozoites 2.2 ? 3.0 μm and late trophozoites 3.3 ? 5.0 μm in diameter for Plasmodium vivax were measured. The patients of age group 1 (0 ? 10 years) were more (25%) vulnerable to the severe malaria (++++), which was 10% of the total infection, while only 10% patients of age group 2 (> 10 years) were suffering from severe form, only 0.6% of the total infection. In age group 1 (0 ? 10 yrs), + infection was 30%, ++ was 40% and +++ was 5%. In age group 2 (> 10 years), + infection was 26.66%, ++ 56.67% and +++ 6.67%, respectively. DOI: http://dx.doi.org/10.3329/dujbs.v21i1.9747 DUJBS 2012 21(1): 79-85
Effect Of Arsenic On The Nutrient Uptake Pattern Of Amaranthus
Authors: Roy Sajal , Parveen Zakia , Huq SM Imamul
Published: February 2012

A macrocosm study was carried out to assess the transfer of arsenic (As) from irrigation water and sludge of arsenic removal water filter to two varieties of Amaranthus and their effects on phosphorus (P), potassium (K), sulfur (S), calcium (Ca) and magnesium (Mg) uptake. P and K uptake in shoot and root were negatively affected by As that were not significant. However, a significant negative relationship was observed between As and S in shoot. A positive and significant relationship existed between As and Ca of green Amaranthus shoot but it was negative and insignificant in case of red Amaranthus. Mg content of shoot and root was positively affected by As in green Amaranthus. On the other hand, in the red Amaranthus the relation between As and Mg was positive in the shoot but negative in the root. DOI: http://dx.doi.org/10.3329/dujbs.v21i1.9748 DUJBS 2012 21(1): 87-96
Health condition of juvenile exotic carp Cyprinus carpio from various fish farms of Mymensingh area, Bangladesh
Authors: Ahmed GU , Akter MN , Islam MR , Rahman KMM
Published: February 2012

Clinical and histopathological studies were carried out with juvenile common carp (C. carpio) from a Government fish farm and a NGO fish farm in Mymensingh area for a period of 9 months from April 2005 to December 2005. Clinically red spots, scale loss, weak body, hemorrhage and subcutaneous lesion were noticed especially during November and December. A moderate pathological change in the investigated organs of all fishes were recorded in summer season (April-May), whereas in rainy season (June-July) pathological symptoms were significantly reduced which was again increased to some extent in the autumn season (August-September). However, marked pathological changes such as necrosis, protozoan cyst, bacterial colony, vacuum, melanomacrophase, hemorrhage, hypertrophy, hyperplasia and clubbing were recorded in all the investigated organs like skin, muscle, gill, liver and kidney in the months of October, November and December. Among the affected organs gills were more affected with the presence of numerous protozoan cysts followed by skin, liver and the less affected organ was the muscle. Clinically and histopathologically juvenile common carp of Government fish farm were more affected compare to NGO fish farm especially in colder moths of the year.DOI: http://dx.doi.org/10.3329/ijns.v1i4.9732 IJNS 2011 1(4): 77-81
Determination of lethal concentration and antibacterial activity of commonly used disinfectants
Authors: Alam M , Rahman MM , Foysal MJ , Hossain MN
Published: February 2012

The toxic effects of four disinfectants viz., copper sulfate (CuSO4), potassium permanganate (KMnO4), methylene blue and malachite green on fish and fish pathogenic bacteria Aeromonas sp., Pseudomonas fluorescens, Edwardsiella sp. and Flavobacterium sp. were investigated. Lethal concentration of the disinfectants to fingerlings of Labeo rohita was determined in aquarium by standard method. Lethal concentration of copper sulfate (CuSO4), potassium permanganate (KMnO4), methylene blue and malachite green against fish were found in 0.75ppm, 7ppm, 6ppm and 0.5ppm at 21.4hrs, 18hrs, 9.5hrs and 1.40hrs, respectively. Methylene blue at 4ppm and 5ppm concentration inhibited the growth of Pseudomonas fluorescens and 6ppm concentration suppressed the growth of Aeromonas sp. Copper sulfate (CuSO4) was effective only against Edwardsiella sp at concentration of 10ppm and 8ppm. Malachite green repressed the growth of all four tasted bacteria at a concentration of 1ppm. Potassium permanganate (KMnO4) was failed to exhibit any inhibitory effect on the bacteria even at 30ppm concentration. DOI: http://dx.doi.org/10.3329/ijns.v1i4.9738 IJNS 2011 1(4): 102-105
FVC, FEV1 and FEV1% in Male Tobacco Industry Workers
Authors: Rahim Zahid ATM Zoadur , Bari MA , Sarkar Chandra Rani , Begum Shirin Akhter , Mosawuir Abdullah Hil
Published: February 2012

Background: Tobacco industry workers are exposed to tobacco dust and smoke in their work places. Usually they have varying degree of impaired pulmonary functions, but the level of awareness about this occupational hazard among the tobacco industry workers and authorities are limited. Objective: The present study was conducted to observe the effects of exposure to tobacco dust and smoking on FVC, FEV1 and FEV1%. Methods: This cross-sectional study was carried out in the Department of Physiology, Rangpur Medical College, Rangpur, from July 2008 to June 2009 on 50 apparently healthy male smoker (Group B) and 40 non-smoker (Group C) tobacco industry workers with age range 20 to 45 years. For comparison,50 age and body surface area matched apparently healthy male non-smoker non-tobacco workers were also studied as Control(group A). The study groups were selected from different tobacco industries of Rangpur district and control group were selected from the surrounding community who belonged to lower socioeconomic condition. Pulmonary function parameters were measured by digital spirometer. Statistical analysis was done by unpaired‘t’ test . Results: Smoker tobacco workers had significantly lower percentage of predicted values of FVC, FEV1 and FEV1% than control subjects (p <0.001). In addition, they had significantly lower values of FEV1 and FEV1% than non-smoker tobacco workers (p <0.01). Conclusion: Pulmonary functions may be impaired in smoker tobacco workers. DOI: http://dx.doi.org/10.3329/jbsp.v6i2.9757 JBSP 2011 6(2): 90-93
Effects Of Music Therapy On Clinical And Biochemical Parameters Of Metabolic Syndrome
Authors: Sharma Madhuri , Rajnee Dr , Mathur Kamlesh Chandra
Published: February 2012

Background: Music therapy is a new approach being used for the management of metabolic abnormalities and stress related illness. Objective: To study the effect of Music therapy on various clinical and biochemical parameters of Metabolic Syndrome. Methods: This cross sectional study was carried out on 100 patients of metabolic syndrome selected randomly. These patients were divided into two equal groups after age, sex adjustment. In control group (group I) 50 patients underwent the conventional treatment. 50 patients in study group were treated with supervised music protocol along with conventional treatment. The Body Mass Index, ;Waist-Hip ratio, Blood pressure, Fasting blood sugar were monitored weekly while HbA1c and lipid profile were determined at the baseline and after three months of exposure to music therapy. Statistical analysis was performed by employing student t- test. Results: In the study group there was a significant decrease in BMI (27.18±5.02 to 25.44±3.49 kg/m2, p<0.05), waist hip ratio (0.95±0.05 to 0.93±0.05 cm, p<0.05), Fasting blood sugar (196.00±47.80mg/ dl to152.00±16.19mg/dl , p<0.001), HbA1c (8.41±1.31% to 7.08±0.78 % p<0.001), Systolic Blood Pressure (151.00±12.10 to 136±9.04 mmHg p<0.001), Diastolic Blood Pressure (94±4.80 to 86.44±3.16 mmHg, p<0.01), Mean serum cholesterol (257.80±18.92 to 229.12±17.82mg/dl, p<0.001) and triglycerides (180.86±14.04 to 136.50±8.92mg/dl, p<0.001), LDL (167.97±14.40 to 140.20±15.41mg/dl, p<0.001), and VLDL (33.60±2.88 to 28.04±3.08mg/dl, p<0.001) and increase in HDL (33.32±3.38 to 39.71±3.41mg/dl, p<0.001), when compared with those of control group not receiving the music therapy along with the conventional treatment. Conclusion: The promising outcomes of Music therapy showed that it may be considered as a useful adjunct to conventional treatment in management of the metabolic syndrome. This study advocates music therapy to establish it from a general well being concepts to a neuroscience guided model. DOI: http://dx.doi.org/10.3329/jbsp.v6i2.9760 JBSP 2011 6(2): 108-115
Study On Harmful Effects Of Opium On Liver And Lungs In Chronic Opium Addicts Of Western Rajasthan
Authors: Pawan M , Choudhary Raghuveer , Mathur Ranjana , Choudhary MR , Kamla M
Published: February 2012

Background: Today opium dependence is widely prevalent in certain states of India, especially Rajasthan, Punjab, Haryana, Madhya Pradesh (MP) etc. In rural areas of western Rajasthan crude opium is consumed with a social acceptance by a notable proportion (8.0%) of adult male population. Later on they become addicted to it. Objective: to observe the changes in some liver and lung function parameters in opium addicted subjects of Barmer city of Western Rajasthan. Methods: The present study was conducted in district hospital of Barmer, Rajasthan. Total fifty (50) adult male subjects with age ranged from 30 to 50 years were participated in this study. Among them 25 were opium addicted and were considered as study group (Group B) and another 25 apparently healthy adult male of same age group were designated as control group (Group A). Opium addicts were consuming about 5–11 gm/day opium for >2 years. Then liver function tests were evaluated by estimating serum aspartate amino transferase (AST), alanine amino transferase (ALT), alkaline phosphatase and lung function tests by measuring FVC, FEV1 , FEV1/FVC% , PEF, FEF 25-75% of both the groups. Results: In this study AST, ALT and alkaline phosphatase levels were found significantly (p<.05) higher in group B as compared to those of group A. Again, FVC, FEV1, FEV1/ FVC were significantly (p<.05) lower in group B as compared to those of group A. PEF (L/sec) and FEF 25-75% were also significantly (p<0.001) lower in group B as compared to those of group A. Conclusion: it is concluded that chronic long term use of opium, increases the risk of hepatic and pulmonary damage. DOI: http://dx.doi.org/10.3329/jbsp.v6i2.9762 JBSP 2011 6(2): 122-126
Quantitative Analysis Of Meiotic Configurations In Tip Sterile Lines Of Hexaploid Wheat
Authors: Zaman Shahriar , Mazid M Abdul , Kabir Golam
Published: February 2012

In five tip sterile lines of hexaploid wheat (Kheri, Mexicani, Pavon-76, Seri-82 and Sonora-64) due to interchange of segments three types of meiotic configuration i.e. ring quadrivalent (oIV), chain quadrivalent (cIV) and trivalent plus univalent (III.I) were found at metaphase I. The observed and expected numbers of meiotic configurations in these translocated lines of wheat were found to following the equations based on normal pairing and non random distribution of chiasmata. Different configurations (oIV, cIV, III.I, oII, cII and I) were analyzed following Jackson and Murray’s (1986) formula. The results revealed that χ2-values for the translocated heterozygotes showed to be fit with the expectation. Data showed good agreement between numbers of expected and observed meiotic configuration and all the lines were in fit to the Ho with p > 0.05. DOI: http://dx.doi.org/10.3329/jles.v6i0.9715 JLES 2011 6: 13-18
Utilization Of Uv Radiation For The Improvement Of Economic Traits In The Silkworm, Bombyx Mori L.
Authors: Ali Md Jamsed , Rahman Sawdagar Mahfazur , Faruki Saiful Islam , Ahsan Md Kamrul
Published: February 2012

To detect the effect of ultraviolet (UV) radiation on some economic traits of the silkworm, Bombyx mori L. variety Urboshi-1, 5-day old pupae were irradiated with 366nm wavelength of UV-rays at a distance of 10.6 cm for 1, 5 and 10 min. UVradiation had significant effects on majority of the 16 characters considered for the study. Three different lines viz. U1-DW, U1- LW and U10-LD were isolated on the basis of their cocoon shape and size from the rearing of the 1st radiated generation (R1). The rearing of the R2 generation produced cocoons which conformed to the shape and size of the cocoons as selected in the R1 generation. The selected lines showed better rearing performance than the control for majority of the characters, especially the cocoon characters which had direct relationships with the commercial cocoon production. Cocoons produced in the R2 generation were utilized in the R3 generation. The evaluation of the cocoon characters of the R3 generation revealed that U1-LW and U10- LD lines hold promise for commercial exploitation. Moreover, U10-LD also showed the lowest larval mortality. DOI: http://dx.doi.org/10.3329/jles.v6i0.9718 JLES 2011 6: 33-37
Biochemical Analysis Of Some Dried Sis Fishes Of The River Padma In Rajshahi
Authors: Sultana Sabina , Parween Selina , Hossain M Altaf
Published: February 2012

Seven different species viz. Chanda baculis, Chanda ranga, Amblypharyngodon mola, Oxygaster bacaila, Clupisoma atherinoides, Corica soborna, Mystus vittatus and a group of mixed SIS fishes viz. Mastacembelus pancalus, Xenntodon cancila, Chanda baculis and Glossogobius giuris were used for preparation of dust which can be preserved for a time period. The fishes were sun dried or oven dried, which are also method of preservation. Quality of the oven-dried fish was better than that of the sun-dried fish, but sun-drying process is easy and can be used in large scale. The fish powder remained in good condition for 7-9 months at normal room temperature, but at -18°C the powder was in good condition throughout the year. Highest quantity of powder from 1 kg of fish was obtained in case of the mixed species as 24.61% and the lowest in O. bacaila which was 20.52%. Biochemical analysis showed that the maximum calcium content was found as 1.34% in M. vittatus and minimum was 0.80% in mixed SIS fishes. Maximum phosphorus content was 2.90% in C. ranga and minimum was 1.72% in C. soborna. Maximum iron content was found as 45.20 mg/100g in mixed SIS fishes and minimum was found as 16.85 mg/100g in O. bacaila. The maximum moisture content was found in C. ranga (13.50%) and the minimum in mixed SIS fishes (11.65%). The maximum protein content was recorded in the mixed SIS fishes (72.45%) and the minimum in C. ranga (52.65%). The experiment was replicated three times and conducted from July 2005 to July 2008. DOI: http://dx.doi.org/10.3329/jles.v6i0.9719 JLES 2011 6: 39-43