bluuebunny/crossref_metadata_2025 huggingface dataset:
Structural, electrical and magnetic features of Kagomé YBaCo4O7system
Authors: Bhat Masroor Ahmad , Zargar R. A. , Modi Anchit , Arora M. , Gaur N. K.
Published: December 2016

Polycrystalline yttrium barium cobaltite (YBaCo4O7) powdered sample was prepared by conventional solid state reaction route using high purity yttrium oxide, barium carbonate and cobalt oxide. The as-prepared sample was characterized by XRD diffraction, SEM/EDAX, Raman analytical techniques, resistivity and magnetization measurements for structural, morphological, electrical and magnetic properties assessment. XRD pattern confirms the single phase formation of the sample without any impurity. SEM image shows the hexagonal growth of the crystal and EDAX spectrum reveals stoichiometric composition of as prepared sample. The variation in electrical resistivity from 90 K to 300 K follows the variable range hopping conductivity mechanism. The strong broad overlapped Raman peaks of Co–O and Y–O stretching and bending vibrations of tetrahedral CoO4with included components of YO6of octahedral symmetry are obtained at 542 cm−1, 486 cm−1and 636 cm−1, 436 cm−1, respectively. DC magnetic susceptibility exhibits very weak ferromagnetism below 80 K and does not obey Curie-Weiss law.
Nonlinear emission from silver-coated 3D hollow nanopillars
Authors: Ghirardini L. , Malerba M. , Bollani M. , Biagioni P. , Duò L. , Finazzi M. , De Angelis F. , Celebrano M.
Published: December 2016

High aspect ratio metal nanostructures have been the subject of a number of studies in the past, due to their pronounced resonances in the infrared that can be exploited to enhance vibrational spectroscopies. In this work, we investigate the nonlinear optical response of both individual and closely-packed assemblies of vertical hollow Ag nanopillars upon excitation with ultrafast laser pulses. In particular, the analysis of their nonlinear emission spectra evidences an intense two photon photoluminescence (TPPL) emission and a neat signature of second harmonic generation (SHG). Given the relatively low background, this pronounced nonlinear emission could be employed as a local probe for analytes trapped at the surface of the nanopillar or flowing through it. For this reason, these nanostructures may become appealing building blocks in multi-purpose devices for nonlinear photonics and sensing.
Issues in the Recognition versus Disclosure of Financial Information Debate
Authors: Novak Aleš
Published: December 2016

Empirical evidence from the academic literature on capital market effects of financial information placement (i.e., recognition on the face of the primary financial statements versus disclosure in the notes to the financial statements) is not straightforward. Therefore, the purpose of this paper is to contribute to the recognition versus required disclosure debate in a standard-setting context by exploring possible reasons for perceived differences between recognized and disclosed amounts. These differences, in our view, arise due to demonstrated auditors’ greater tolerance for misstatement in disclosed amounts, allowed noncompliance with disclosure requirements even in strong enforcement regimes, lesser care that preparers of financial statements devote to disclosures relative to recognized items as well as behavioural factors and differential processing costs related to the users of financial information. We believe that these arguments strengthen the case for the general preference for the recognition of financial information in the standard-setting context. The original scientific contribution of this paper is to systematically identify the reasons for the differences between recognized and disclosed amounts in financial statements. As such, this paper may provide a suitable basis for the justification of certain conceptual changes in the field of international accounting standards that are currently underway.
Prospects for Nonprofits and Philanthropy in the Trump Presidency
Authors: Abramson Alan J. , Salamon Lester M.
Published: December 2016

Based on the limited information currently available about Donald Trump’s plans for his presidency, his tenure looks like it will be a difficult time for the nonprofit sector and philanthropy in the U.S. Nonprofits and philanthropy can expect to face significant challenges from expected tax cuts, spending cuts, and regulatory changes. One of the few bright spots for nonprofits and philanthropy may be possible Trump administration support for new hybrid, double-bottom-line approaches to addressing social problems, and these only partly target the core of the nonprofit sector. Overall, the most profound impact of the Trump ascendance on the country’s nonprofit sector may be to stimulate a reinvigoration of the sector’s civic engagement and advocacy role.
Household Scales: What Cooking Pots Can Tell Us About Households in the Late Neolithic Stavroupoli (Northern Greece)
Authors: Lymperaki Marianna , Urem-Kotsou Dushka , Kotsos Stavros , Kotsakis Kostas
Published: December 2016

Remains of the houses in the Late Neolithic of Northern Greece are as a rule less well preserved
than in some other regions of Greece such as Thessaly. The site of Stavroupoli-Thessaloniki is a settlement
with a dense habitation pattern, but poorly preserved architecture. Several habitation phases have been
distinguished, dating to the Middle and Late Neolithic. Radiocarbon dates place the earlier phase to
5890 B.C. or slightly later. As the domestic unit in Stavroupoli can barely be approached through their
architecture, the ceramic wares and particularly the cooking vessels will be used as a proxy to identify
households and clarify aspects of their organization. The size of domestic units is approached through
capacity of cooking pots, assuming that sharing cooked food on everyday level is a vital element of these
units. Also, variability in cooking techniques between houses and possible changes through time will be
examined through both the shape and the size of cooking vessels. Finally, Stavroupoli’s cooking pots will
be compared with cooking vessels from other contemporaneous sites in order to approach the issue of
household on a regional level.
The Role of Sunken-Floored Buildings in LBK Farmstead
Authors: Połczyński Łukasz , Michalak Katarzyna
Published: December 2016

Research into the development of LBK villages rarely focuses on those features that can be
interpreted as sunken-floored buildings. The aim of this article is to draw attention to the presence of this
type of feature and to analyse its significance in the context of village development based on several examples
of LBK sites excavated in Małopolska (Lesser Poland). We believe that in many instances analysing the
locations of sunken-floored buildings and their diversity in terms of their potential functions can lead to the
identification of domestic/kitchen zones that centered around these features. Their location in the vicinity of
longhouses, traces of fire, and the presence of pottery sherds and grain remains may indicate that sunkenfloored
buildings served as an important additional ancillary space for the residents of longhouses and
constituted part of the farmstead.
Towards an optofluidic pump?
Authors: Emile Olivier , Emile Janine
Published: December 2016

Most of the vibrating mechanisms of optofluidic systems are based on local heating of membranes that induces liquid flow.We report here a new type of diaphragm pump in a liquid film based on the optical radiation pressure force. We modulate a low power laser that generates, at resonance, a symmetric vibration of a free standing soap film. The film lifetime strongly varies from 56 s at low power (2 mW) to 2 s at higher power (70 mW). Since the laser beam only acts mechanically on the interfaces, such a pump could be easily implemented on delicate microequipment on chips or in biological systems.
The effect of hydroxyapatite nanoparticles on crystallization and thermomechanical properties of PLLA matrix
Authors: Athanasoulia Ioanna-Georgia I. , Christoforidis Maximos N. , Korres Dimitrios M. , Tarantili Petroula A.
Published: December 2016

In this study, hydroxyapatite (HA) was incorporated in a poly(L-lactic acid) (PLLA) matrix and the thermal properties and crystallization behavior of the derived composites were investigated. The nanocomposites, containing 0–20 wt% HA, were prepared by melt extrusion employing a twin-screw extruder. XRD experiments verified an increase in the intensity of the characteristic diffraction peak of the α-form crystalline phase of PLLA with increasing HA content. By DSC experiments it was observed that the presence of HA increased the crystallinity during cold crystallization, leading to a shift of cold-crystallization temperature to lower values and to an increase in the melting temperature of the PLLA phase. Isothermal crystallization experiments at 100, 110, 115 and 120°C, revealed a maximum in crystallization kinetic around 100°C after the addition of HA compared to 115°C for pure PLLA. The crystallization rate of PLLA matrix in the nanocomposites decreased with increasing crystallization temperature. By using the Avrami and Lauritzen-Hoffman equations the exponent n was calculated in the range 2–3 and a theoretical approach verified that the HA/PLLA systems belong to Regime II of crystallization behavior. The investigated melting behavior of PLLA was attributed to better organized crystalline structure with increasing isothermal crystallization temperatures and might be related with the longer time necessary for the completion of crystallization.
On one class of high-order compact grid-characteristic schemes for linear advection
Authors: Khokhlov Nikolay I. , Petrov Igor B.
Published: December 2016

A class of two-point compact difference schemes of the second–third orders of accuracy on a twopoint coordinate stencil is considered for a one-dimensional transfer equation. All difference schemes are based on interpolation polynomials constructed on a given stencil. Based on the behaviour of the solution and the character of interpolation polynomials, we propose hybrid compact difference schemes of 2–3rd orders of accuracy on smooth functions producing solutions weakly smoothing the front of discontinuities. The study of grid convergence for the constructed difference scheme is carried out and the propagation of a pulse of complex form is simulated numerically for studying the behaviour of the difference scheme on discontinuous solutions.
Sciatica due to pelvic hematoma: case report
Authors: Kocaman Umit , Yilmaz Muhammet Bahadir , Yilmaz Hakan
Published: December 2016

Sciatica is defined as pain in the sciatic nerve distribution. The most common reason of sciatica is radiculopathy due to lumbar disc hernia. Other causes can be congenital, acquired, infectious, neoplastic, or inflammatory. The piriformis syndrome is another cause. The pain starts in an insidious manner when the cause of sciatica is an extraspinal tumor. It is intermittent at first but a constant and progressive pain that does not decrease with position or rest gradually develops in all patients. The possibility of an intraabdominal or pelvic mass should always be considered and the relevant tests requested when the cause of the sciatica cannot be explained. We present an 83-year-old male who presented with non-traumatic and non-vascular lumbosacral plexopathy due to a large hematoma in the left adductor muscle following the use of warfarin sodium.
Die spirituelle Dimension des Schmerzes
Authors: Schaupp Walter
Published: December 2016

Noch immer besteht im medizinischen Kontext Unsicherheit im Verständnis der spirituellen Dimension von Krankheit und Schmerz und im Hinblick auf die Frage wie weit diese als eigene Dimension in das medizinische Menschenbild aufgenommen werden soll. Der Beitrag versucht, das Wesen spirituellen Leids auf dem Hintergrund gegenwärtiger neurobiologischer Erkenntnisse ausgehend von einer Analyse menschlicher Subjektivität zu klären. Menschliche Subjektivität und damit verbundene Fragen von Sinn und Bedeutung sind Bedingung für Spirituelles, sollten aber nicht selbst als „spirituell“ bezeichnet werden. Trotz einer feststellbaren terminologischen Verschiebung von „existentiellem Leid“ zu „spirituellem Schmerz“ sollte der Begriff „spirituell“ für Fragen stehen, die letzten Sinn oder letzte Transzendenz involvieren. Die existentielle und die spirituelle Ebene greifen trotzdem eng ineinander. In der Begegnung mit Kranken und Sterbenden sind terminologische Fragen im Vergleich zur Pflicht, alle faktisch bestehenden Formen von Leid und Schmerz wahrzunehmen und darauf zu antworten, jedoch sekundär. „Existentiell-spirituelles Leid“ könnte auf dieser Ebene ein geeigneter Begriff sein, um dem Ineinander von existentiellen Sinnfragen und spirituellen Fragen im engen Sinn gerecht zu werden.
Talentsein als Entwicklungsaufgabe
Authors: Pallesen Hilke
Published: December 2016

Im Zentrum des vorliegenden Beitrags stehen die Passungsverhältnisse zwischen den Anforderungen einer sportprofilierten Gesamtschule und den subjektiven Bildungsgangkonstruktionen von Sportklassenschülern/innen. Besonderes Augenmerk liegt auf der Passungsarbeit, die diese dazu herausfordert, zu einer subjektiv tragfähigen Vermittlung zwischen den eigenen Entwicklungswünschen und den institutionellen Anforderungen zu gelangen. In einem rekonstruktiv-fallanalytisch angelegten Forschungsprogramm erfolgte die empirische Rekonstruktion dieser Auseinandersetzungsprozesse. Es zeigt sich, dass das ‚Talentsein‘ kaum als standardisierter Ablauf von Karrierestationen zu verstehen ist, sondern vielmehr als Entwicklungsaufgabe, die Potenziale zur Reproduktion aber auch zur Transformation bestehender Selbst- und Weltverständnisse bereithält.
Investigation on the Performance of Forward Bending Fan
Authors: Shuiqing Zhou , Hongying Deng , Yi Ma , Shengchang Zhang
Published: December 2016

The forward bending centrifugal fan features long vanes and narrow passages, and the internal flow is apt to be affected by wall boundary layer of the blade surfaces. An aerodynamic investigation on the forward bending centrifugal fan is presented in this paper. The performances of the unsteady flow field in the centrifugal fan is predicted by solving the incompressible Reynolds-averaged Navier-Stokes (RANS) equations based on the Shear Stress Transport (SST) – Scale Adaptive Simulation (SAS) turbulence model. And three-dimensional (3-D) flow phenomenon of non-uniform fluid flow is discussed through observing the flow separation and vortex distribution in the impeller region. The installation location of inlet nozzle is finally adjusted based on the calculated results, and the centrifugal fan with eccentric inlet nozzle is proposed. From the results, the eccentric inlet nozzle with L=3 mm, θ=120° could improve the internal flow of the forward bending centrifugal fan and enhance its aerodynamic performance.
Gene expression profiling of the dorsolateral and medial orbitofrontal cortex in schizophrenia
Authors: Mladinov Mihovil , Sedmak Goran , Fuller Heidi R. , Babić Leko Mirjana , Mayer Davor , Kirincich Jason , Štajduhar Andrija , Borovečki Fran , Hof Patrick R. , Šimić Goran
Published: December 2016

Schizophrenia is a complex polygenic disorder of unknown etiology. Over 3,000 candidate genes associated with schizophrenia have been reported, most of which being mentioned only once. Alterations in cognitive processing - working memory, metacognition and mentalization - represent a core feature of schizophrenia, which indicates the involvement of the prefrontal cortex in the pathophysiology of this disorder. Hence we compared the gene expression in postmortem tissue from the left and right dorsolateral prefrontal cortex (DLPFC, Brodmann's area 46), and the medial part of the orbitofrontal cortex (MOFC, Brodmann's area 11/12), in six patients with schizophrenia and six control brains. Although in the past decade several studies performed transcriptome profiling in schizophrenia, this is the first study to investigate both hemispheres, providing new knowledge about possible brain asymmetry at the level of gene expression and its relation to schizophrenia. We found that in the left hemisphere, twelve genes from the DLPFC and eight genes from the MOFC were differentially expressed in patients with schizophrenia compared to controls. In the right hemisphere there was only one gene differentially expressed in the MOFC. We reproduce the involvement of previously reported genes TARDBP and HNRNPC in the pathogenesis of schizophrenia, and report seven novel genes:SART1, KAT7, C1D, NPM1, EVI2A, XGY2, andTTTY15. As the differentially expressed genes only partially overlap with previous studies that analyzed other brain regions, our findings indicate the importance of considering prefrontal cortical regions, especially those in the left hemisphere, for obtaining disease-relevant insights.
Application of Facility Management in Brownfield Conversion
Authors: Wernerová Eva , Kuda František , Endel Stanislav
Published: December 2016

The subject of this paper covers two issues, namely the issue of brownfields and their conversion and the issue of Facility Management, which offers the possibility of applying its principles and tools for extending the benefit of the construction works as a tool for active access to care for the property. This paper aims to link these two topics and to identify the possibility of applying Facility Management in the conversation process of revitalization of brownfields so that subsequent commissioning eliminates the risk of future costly operation and relapse of the revitalized building into the category of brownfields.
Sabrina Hoppe: Demokratische Konsenskultur? Von der Sympathie des bundesdeutschen Protestantismus für eine Ethik des Kompromisses
Authors: Hoppe Sabrina
Published: December 2016

In her article the author shows the relevance of the concept of compromise for protestant ethics after 1945. Coming from the current discussion about the significance of compromise in the german society today she asks for the role of compromises for community building and as a guarantee for plurality in the civil society nowadays. The author illustrates the relation between compromise, plurality and democracy in protestant ethics after World War II by presenting an article of the German pastor Eberhard Müller, who was the founder of the Protestant Academy of Bad Boll in Wuerttemberg/West-Germany in 1945. In his article compromise, published in the Evangelisches Soziallexikon (Protestant Encyclopedia of social ethics, Kreuz-Verlag Stuttgart) 1954 Müller emphasizes his conviction, that after the ideology of Nazi-Germany only a culture of communication and exchance, a culture, that is based on compromises could anchor an understanding of democracy in the young German society.
Untangling Basal Ganglia Network Dynamics and Function: Role of Dopamine Depletion and Inhibition Investigated in a Spiking Network Model
Authors: Lindahl Mikael , Hellgren Kotaleski Jeanette
Published: December 2016

The basal ganglia are a crucial brain system for behavioral selection, and their function is disturbed in Parkinson’s disease (PD), where neurons exhibit inappropriate synchronization and oscillations. We present a spiking neural model of basal ganglia including plausible details on synaptic dynamics, connectivity patterns, neuron behavior, and dopamine effects. Recordings of neuronal activity in the subthalamic nucleus and Type A (TA; arkypallidal) and Type I (TI; prototypical) neurons in globus pallidus externa were used to validate the model. Simulation experiments predict that both local inhibition in striatum and the existence of an indirect pathway are important for basal ganglia to function properly over a large range of cortical drives. The dopamine depletion–induced increase of AMPA efficacy in corticostriatal synapses to medium spiny neurons (MSNs) with dopamine receptor D2 synapses (CTX-MSN D2) and the reduction of MSN lateral connectivity (MSN–MSN) were found to contribute significantly to the enhanced synchrony and oscillations seen in PD. Additionally, reversing the dopamine depletion–induced changes to CTX–MSN D1, CTX–MSN D2, TA–MSN, and MSN–MSN couplings could improve or restore basal ganglia action selection ability. In summary, we found multiple changes of parameters for synaptic efficacy and neural excitability that could improve action selection ability and at the same time reduce oscillations. Identification of such targets could potentially generate ideas for treatments of PD and increase our understanding of the relation between network dynamics and network function.
Identification of Soybean Resistance to Pod Sucking Bug (Riptortus linearis) by No-Choice Test
Authors: Krisnawati Ayda , Bayu Marida Santi Yudha Ika , Adie Moch. Muchlish
Published: December 2016

Soybean pod damaged by pod sucking bug (Riptortus linearis) is one of the constraint within soybean yield improvement in Indonesia. The research aimed was to identify the resistance of soybean genotypes to pod sucking pest. The experiment was conducted in Iletri’s screen house from March to June 2015. The experiment was arranged in Randomized Completely Block Design using 10 soybean genotypes with three replicates. The soybean resistance was evaluated using no-choice test. Data collected on number of pod/plant, number of seed/plant, seed weight per plant, number of attacked pod/plant, and number of attacked seed/plant. The result showed that the lowest percentage both of pod and seed damage was G511H/Anjasmoro//Anjasmoro-2-8, that was 25.83 % and 19.12 %, respectively. Based on the value of the percentage of seed damage, there were five susceptible genotypes, three moderately resistant, and two resistant genotypes. Based on the value of the percentage of pod damage, showed four susceptible genotypes, five moderately resistant, and a resistant genotype. G511H/Anjasmoro//Anjasmoro-2-8 was the only resistant genotype, and it could be used as a genetic source in the improvement of soybean resistance to pod sucking bug.

How to Cite

Krisnawati, A., Bayu, M. S. Y. I. & Adie, M. M. (2016). Identification of Soybean Resistance to Pod Sucking Bug (Riptortus linearis) by No-Choice Test. Biosaintifika: Journal of Biology & Biology Education, 8(3), 407-414. 
An Effort of Mutation Breeding by Oryzalin and Gamma Rays on Wild Raspberry (Rubus sp.) in Cibodas Botanical Garden
Authors: Surya Muhammad Imam , Ismaini Lily , Destri Destri , Normasiwi Suluh
Published: December 2016

Currently, Cibodas Botanical Garden (CBG) has a domestication programme of wild raspberries (Rubus sp.) from Indonesia mountain forest. One of the activities in the domestication programme is fruit breeding. In order to improve the quality of wild raspberry, two mutagens i.e. chemical (oryzalin) and physical (gamma rays) mutagens were used in the breeding programme. Moreover, seed of wild raspberries from the collection of CBG were used in the programme of mutation breeding.  The results showed that each species of wild raspberries has different response on the mutagen. Percentage of seed germination were affected by mutagen of oryzalin and gamma rays. Rubus fraxinifolius and Rubus rosifolius seeds were still able to germinate after treated by 100 µM of oryzalin. In the other hand, with increase in radiation above 300 Gy a reduction in percentage of germination was observed in M1 generation of Rubus lineatus and Rubus chrysophyllus.

How to Cite

Surya, M. I., Ismaini, L., Destri, D. & Normasiwi, S. (2016). An Effort of Mutation Breeding by Oryzalin and Gamma Rays on Wild Raspberry (Rubus spp.) in Cibodas Botanical Garden. Biosaintifika: Journal of Biology & Biology Education, 8(3), 331-335. 
Screening Cellulolytic Bacteria from the Digestive Tract Snail (Achatina fulica) and Test the Ability of Cellulase Activity
Authors: Wijanarka Wijanarka , Kusdiyantini Endang , Parman Sarjana
Published: December 2016

On the research of enzyme production levels observed cellulase produced by bacteria in the digestive tract of the isolation of the Snail (Achatina fulica). Isolation of bacteria based on the ability of bacteria to grow on CMC media. The purpose of this study was to determine cellulase activity by cellulolytic bacteria. Some bacterial isolates were identified as cellulolytic bacteria, they were KE-B1, KE-B2, KE-B3, KE-B4, KE-B5, and KE-B6. Isolates KE-B6 was the best isolates. Furthermore KE-B6 isolates were grown on media production to determine the pattern of growth and enzyme activity. Measurement of cell growth was conducted by inoculating starter aged 22 hours at CMC production of liquid medium. Cellulase enzyme activity measurements was performed by the DNS method. The results showed that the highest activity by new isolate bacteria KE-B6 and its value of the activity of 0.4539 U/mL, growth rate (µ) 0.377/hour and generation time (g) 1.84 hour. This research expected cellulase of producing bacteria were easy, inexpensive and efficient. This enzyme can be used as an enzyme biolytic once expected to replace expensive commercial enzyme. The biotylic enzyme can be applied to strains improvement (protoplast fusion).

How to Cite

Wijanarka, W., Kusdiyantini, E. & Parman, S. (2016). Screening Cellulolytic Bacteria from the Digestive Tract Snail (Achatina fulica) and Test the Ability of Cellulase Activity. Biosaintifika: Journal of Biology & Biology Education, 8(3), 386-392. 
Stimulation of Deprivation Cycles with Spirulina platensis Feed Supplementation on Osphronemus gouramy Physiological Responses
Authors: Simanjuntak Sorta Basar Ida , Wibowo Eko Setio , Indarmawan Indarmawan
Published: December 2016

Spirulina platensis is a phytoplankton, the cell wall composed of complex sugars so easily digested by fish. The present study was carried out to investigate stimulation cycle of feed deprivation with feed supplemented S. platensis the best to increase growth, hematological and body composition of gurami (Osphronemus gouramy). Groups of 24 fish, each in triplicate, were exposed to four different treatment for a period of 56 days. Sample measurements of growth done every 14 days, hematological and body composition measurements carried out at the end of the experiment. Growth was significantly different between stimulation cycle of feed deprivation and the control (P<0.05). Conclusions result showed that stimulation cycles of feed deprivation could not improve growth and hematological, but could improve body composition. Feed deprivation is done to reduce the cost of production, high production costs due to high feed prices. During research on feed deprivation is done by giving commercial feed, this study is to provide feed supplementation S. platensis. Thus, the results of this study can be useful for science as S. platensis information can be used as a food supplement and and for the people cultivating gurami should be fed daily supplementation of S. platensis.

How to Cite

Simanjuntak, S. B. I., Wibowo, E. S. & Indarmawan, I. (2016). Stimulation of Deprivation Cycles with Spirulina platensis Feed Supplementation on Osphronemus gouramy Physiological Responses. Biosaintifika: Journal of Biology & Biology Education, 8(3),  378-385. 
Immune Responses of Wistar Rat (Rattus novergicus) on Adduction of Humid Acid from Borneo Peat Soil
Authors: Rousdy Diah Wulandari , Rahmawati Rahmawati , Kurniatuhadi Rikhsan
Published: December 2016

Peat soil is a type of soil that dominates the island of Borneo. Typical compounds in peat soil is shumic acid. Various in vitro studies performed have shown peat subtropical humic compounds can stimulate the immune system. However, in vivo study on animal has not been done. This study aimed to determine the effect of humic acid extracted from peat soil of Kalimantan against the immune system, both of non-specific and specific immunity Wistar rats (Rattus novergicus). Research using a completely randomized design with five treatments and five replicates, the normal controls, a positive control (isoprinosine), humic acid 125; 250; 500 mg/kg. Humic acid was administered orally for 10 days. The results showed humic acid adduction did not significantly affect levels of hemoglobin, erythrocytes and hematocrit. Humic acid adduction of 125 mg/kg significantly affects the total leukocyte count and differential leukocyte. Humic acid 125 mg/kg also showed increased phagocytic index better than normal controls. All humic acid treatments do not provide a significant effect on the total amount of antibody. The results of this study can be used for the development of Borneo tropical peat resources as natural imunostimulant.

How to Cite

Rousdy, D. W., Rahmawati, R. & Kurniatuhadi, R. (2016). Immune Responses of Wistar Rat (Rattus novergicus) on Adduction of Humid Acid from Borneo Peat Soil. Biosaintifika: Journal of Biology & Biology Education, 8(3), 401-406. 
Correlated Mutations and Homologous Recombination Within Bacterial Populations
Authors: Lin Mingzhi , Kussell Edo
Published: December 2016

Inferring the rate of homologous recombination within a bacterial population remains a key challenge in quantifying the basic parameters of bacterial evolution. Due to the high sequence similarity within a clonal population, and unique aspects of bacterial DNA transfer processes, detecting recombination events based on phylogenetic reconstruction is often difficult, and estimating recombination rates using coalescent model-based methods is computationally expensive, and often infeasible for large sequencing data sets. Here, we present an efficient solution by introducing a set of mutational correlation functions computed using pairwise sequence comparison, which characterize various facets of bacterial recombination. We provide analytical expressions for these functions, which precisely recapitulate simulation results of neutral and adapting populations under different coalescent models. We used these to fit correlation functions measured at synonymous substitutions using whole-genome data on Escherichia coli and Streptococcus pneumoniae populations. We calculated and corrected for the effect of sample selection bias, i.e., the uneven sampling of individuals from natural microbial populations that exists in most datasets. Our method is fast and efficient, and does not employ phylogenetic inference or other computationally intensive numerics. By simply fitting analytical forms to measurements from sequence data, we show that recombination rates can be inferred, and the relative ages of different samples can be estimated. Our approach, which is based on population genetic modeling, is broadly applicable to a wide variety of data, and its computational efficiency makes it particularly attractive for use in the analysis of large sequencing datasets.
Stable Binding of the Conserved Transcription Factor Grainy Head to its Target Genes ThroughoutDrosophila melanogasterDevelopment
Authors: Nevil Markus , Bondra Eliana R , Schulz Katharine N , Kaplan Tommy , Harrison Melissa M
Published: December 2016

It has been suggested that transcription factor binding is temporally dynamic, and that changes in binding determine transcriptional output. Nonetheless, this model is based on relatively few examples in which transcription factor binding has been assayed at multiple developmental stages. The essential transcription factor Grainy head (Grh) is conserved from fungi to humans, and controls epithelial development and barrier formation in numerous tissues. Drosophila melanogaster, which possess a single grainy head (grh) gene, provide an excellent system to study this conserved factor. To determine whether temporally distinct binding events allow Grh to control cell fate specification in different tissue types, we used a combination of ChIP-seq and RNA-seq to elucidate the gene regulatory network controlled by Grh during four stages of embryonic development (spanning stages 5–17) and in larval tissue. Contrary to expectations, we discovered that Grh remains bound to at least 1146 genomic loci over days of development. In contrast to this stable DNA occupancy, the subset of genes whose expression is regulated by Grh varies. Grh transitions from functioning primarily as a transcriptional repressor early in development to functioning predominantly as an activator later. Our data reveal that Grh binds to target genes well before the Grh-dependent transcriptional program commences, suggesting it sets the stage for subsequent recruitment of additional factors that execute stage-specific Grh functions.
Síntomas neuropsiquiátricos en encefalitis por anticuerpos contra el receptor N-metil-D-aspartato: a propósito de dos casos
Authors: Custodio N. , Escobar Montalvo J.
Published: December 2016

La encefalitis frente al receptor de N-metil-D-aspartato (NMDAR) está incluida en el grupo de las encefalitis autoinmunes. Es más frecuente en mujeres en edad reproductiva. Las manifestaciones clínicas iniciales pueden ser similares a los pródromos de las infecciones virales. En ocasiones se asocia con la presencia de neoplasias. El diagnóstico oportuno y la instauración precoz del tratamiento inmunomodulador es determinante en el pronóstico. En el presente artículo, se realiza una revisión de la literatura y se presentan dos casos de encefaltis anti-NMDAR en diferentes edades de la vida.
Desórdenes psiquiátricos de los inmigrantes chinos del siglo XIX. Segunda parte: Condiciones de vida y salud mental de los inmigrantes chinos entre 1865 y 1900
Authors: Ning Anticona José Li
Published: December 2016

Se indagó sobre los desórdenes de la salud mental de los inmigrantes chinos (culíes) que llegaron al Perú en el siglo XIX, entre 1849 y 1874, para suplir la carencia de mano de obra después de la abolición de la esclavitud. Se revisó las publicaciones históricas sobre las condiciones de vida de esa población; los datos se sustentan en registros provenientes de sus centros de trabajo. Los informes, que abarcan el período entre 1865 y 1900, permitieron delinear alteraciones emocionales y de conducta relacionadas con estrés prolongado (reclutamiento traumático, larga e insalubre travesía marítima, sin familia, con trabajo en condiciones de semiesclavitud y encierro en galpones). Se colige la presencia de estados asteniformes somatógenos, depresivos, hipocondríacos o de simulación en los trabajadores calificados como ‘mañosos’. La literatura refiere prácticas homosexuales en el encierro obligado de varones solteros y enfermedades de transmisión sexual que incluye a la sífilis; un elevado consumo de opio que trató de ser reemplazado por alcohol y coca; actitudes de desesperanza, resistencia y rebeldía que condujeron a suicidios y homicidios así como a rebeliones grupales y a colaboracionismo durante la Guerra del Pacífico. Estos hallazgos históricos, confrontados con las estadísticas hospitalarias del Manicomio del Cercado (primera parte), coinciden en señalar el alto consumo de opio, por los cuadros diagnosticados en el hospital psiquiátrico como ‘locura tóxica’ asociada a ese estupefaciente. Hay una discrepancia entre los informes históricos de frecuentes enfermedades de transmisión sexual, incluyendo sífilis, y la escasa prevalencia hospitalaria de parálisis general progresiva (PGP), la forma psiquiátrica de la neurosífilis revelada en la primera parte de este estudio. En la discusión de esta incongruencia se plantea la posibilidad de una malarioterapia ecológica como factor influyente en la baja prevalencia hospitalaria de PGP.
Nivel de calidad del servicio aplicando el modelo SERVQVAL en el Centro de Idiomas de la Universidad Nacional del Callao
Authors: Suárez Bazalar Raúl
Published: December 2016

En este artículo se presentan los resultados de la investigación sobre la medición del nivel de calidad mediante el modelo SERVQUAL en el Centro de Idiomas de la Universidad Nacional del Callao (CIUNAC). Se determinaron las percepciones de los usuarios con respecto a los servicios brindados por el CIUNAC y establecer el nivel de calidad del servicio. En líneas generales existe una mediana satisfacción con la calidad del servicio que ofrece el Centro de Idiomas, encontrándose la menor satisfacción en cuanto a la asesoría en trámites.

El modelo empleado ayudará a establecer planes de mejora para cada área del interés del alumno, mejorando la calidad del servicio a fin de ser una organización competitiva.
Accidentabilidad laboral en Arequipa: Un estudio bibliométrico a partir de la prensa escrita desde el 2000 al 2009
Authors: Arias Gallegos Walter
Published: December 2016

La finalidad del presente trabajo es analizar las características de la ocurrencia de accidentes laborales en tres sectores socioproductivos (industria, minería y construcción) de la ciudad de Arequipa durante los años 2000 y 2009. Se trabajó con el método bibliométrico un estudio de corte descriptivo, en el que las unidades de análisis fueron 3,653 ejemplares de un periódico de la localidad (diario Correo) de las que se extrajeron datos de los accidentes laborales ocurridos en la ciudad a través de una ficha de registro. Se encontró que el sector más vulnerable es el industrial seguido del de construcción y de minería, debido a que la ocurrencia de accidentabilidad es mayor en la industria, aunque las víctimas mortales se registran más en el sector construcción. En los tres casos hay una tendencia a la diminución de accidentes, que es más marcada en el sector construcción. Además, los tipos de accidentes más frecuentes fueron las caídas, los cortes, las explosiones y las intoxicaciones. Se concluyó que los accidentes en la región están disminuyendo paulatinamente y que las tasas de accidentabilidad en la región son bajas en comparación con otras ciudades de América Latina.
Prospectiva y expectativas ocupacionales de los pescadores artesanales del Ecuador ante el cambio de la matriz productiva del país
Authors: Pazmiño Solys Gabriel Arturo , Jave Nakayo Jorge Leonardo , Sánchez Sotomayor Segundo Ramiro
Published: December 2016

Este artículo expone un acercamiento a la prospectiva de la movilidad ocupacional de los pescadores artesanales del Ecuador ante el cambio de la matriz productiva del país, al mejoramiento de las condiciones de trabajo en sus puertos pequeros artesanales y al apoyo al sector pesquero artesanal, a través de un análisis cuantitativo de sus aspiraciones y expectativas ocupacionales. La metodología que se consideró es el uso de datos secundarios recolectados a través de una encuesta administrada a 392 pescadores en los cinco principales puertos pesqueros artesanales del Ecuador, Puerto Aconcito y Santa Rosa de la provincia de Santa Elena, Puerto Jaramijo y San Mateo de la provincia d,e Manabí y Puerto La Poza de la Provincia de Esmeraldas. Los resultados indican que existe un componente de identidad que define las pautas sobre la ocupacionalidad de los pescadores en términos de sus aspiraciones ocupacionales y de las expectativas que los pescadores proyectan para sí mismos y a sus hijos. A un nivel subjetivo, la dimensión tradicional del oficio de pescador artesanal se ejemplifica en la importancia que tiene el trabajo como eje constituyente de la identidad de los individuos, en la permanencia en el sector, en la transmisión intergeneracional del oficio, en la creación de empresas familiares en torno a la pesca y en la negación a cambiar de ocupación.
Identificación de Peligros y Evaluación y Control de Riesgos (IPERC) en la miniplanta de hilandería y tejeduría de la Facultad de Ingeniería Industrial - UNMSM
Authors: Medina Escudero Ana María , Chon Torres Enrique Whazan , Sánchez Condori Sixto
Published: December 2016

El conocimiento de los procesos productivos es una garantía en la detección de riesgos reales existentes y es por ello que como parte de la formación académica profesional de los estudiantes de Ingeniería Textil y Confecciones se les capacita en los diferentes procesos textiles. Para el proceso de hilado y tejido de la fibra se requiere maquinaria especializada como la carda, el manuar, la hiladora y la tejedora que se encuentra en la Mini Planta de Hilandería y Tejeduría de la Facultad; además de un ambiente adecuado para prevenir cualquier accidente y la capacitación sobre las medidas de seguridad durante la manipulación de los mismos. En ese sentido, el presente artículo tiene como objetivo identificar los peligros y evaluar los riesgos y sus medidas de control (IPERC) en la Miniplanta de Hilandería y Tejeduría de la Facultad de Ingeniería Industrial de la UNMSM usando la metodología sugerida por el Ministerio de Trabajo y Promoción del Empleo (MTPE) y además cumplir con uno de los principios de la Ley de Seguridad y Salud en el Trabajo, Ley 29783, que es el principio de prevención.
Marketing deontológico: herramienta para la sostenibilidad ambiental
Authors: Vásquez Erazo Edwin , Vásquez Álvarez Juan Sebastian , Vásquez Álvarez Jessica
Published: December 2016

El objetivo de esta investigación fue desarrollar un modelo conceptual de marketing que aporte a la responsabilidad social ambiental de empresas y consumidores para disminuir la contaminación, contribuyendo a mejorar la calidad de vida, para lo cual se realizó primero una investigación con fuentes secundarias que permitieran constatar la existencia de indicios de procesos de contaminación en los diferentes segmentos identificados de tal forma que puedan orientar la propuesta, del análisis efectuado. Se obtuvieron los elementos fundamentales para la construcción del modelo de gestión. Como resultado se constató que el papel del marketing deontológico ha mejorado la conducta, los hábitos de los consumidores y la forma de producción de los empresarios con relación al cuidado y protección del ambiente. De igual manera se establecen nuevas dimensiones con relación a las variables del marketing mix, incorporando tres elementos, personas, protección, producción limpia y se identifican estrategias que aporten al desarrollo sostenible.
Modelo de medición del capital intelectual en las carreras acreditadas de Ingeniería Industrial del Perú
Authors: Pastrana Díaz Nérida Del Carmen
Published: December 2016

En este escenario de globalización, donde el conocimiento es la nueva base de la competitividad, las organizaciones afrontan desafíos que exigen de manera inminente, la identificación y medición de intangibles que representan el Capital Intelectual para que puedan gestionarse efectivamente y lograr los niveles de competitividad que el mundo actual exige. En el artículo se propone el diseño de un modelo de medición del Capital Intelectual de las Carreras Acreditadas de Ingeniería Industrial del Perú: CI-FII, a partir de un estudio de casos. Este modelo se valida empíricamente a través de una muestra de 100 docentes, obtenida de las cuatro (04) Carreras Acreditadas de Ingeniería Industrial del Perú, los resultados muestran que el Capital Intelectual se encuentra en una ventaja competitiva diferenciadora, habiendo alcanzado una valoración del 63,54%, en donde el Capital Humano tiene la más alta valoración respecto de Capital Estructural con un 24,02%, seguida del Capital Estructural con un 16.5%, el Capital Relacional con 13.98% y finalmente el Capital Social con 9.05% y utilizando Redes Bayesianas se determinan doce factores que tienen influencia significativa en el Capital Intelectual y los impactos que ellos generan. Se propone un software aplicativo para la medición y gestión del Capital Intelectual.
Los estilos convergente y divergente para resolución de problemas. La perspectiva de los sistemas blandos en el aprendizaje por experiencias
Authors: Acevedo Borrego Adolfo , Cachay Boza Orestes , Linares Barrantes Carolina
Published: December 2016

La complejidad sistémica de las organizaciones comprende niveles operativos, estratégicos y conceptuales dentro de las actividades funcionales de dirección y operación. En este contexto, el ingeniero industrial y las ingenierías de procesos se desenvuelven empleando diversas combinaciones de medios y tomando decisiones respecto a la asignación de recursos y la orientación de la organización, donde utiliza herramientas sistemáticas o “duras” derivadas de la administración científica y herramientas heurísticas o “blandas” relacionadas a la intuición y estrategia. El objetivo de la investigación es identificar el grado de empleo de técnicas y herramientas sistemáticas cuantitativas o herramientas intuitivas cualitativas para la toma de decisiones. El diseño de la investigación es exploratorio y descriptivo, se ha empleado estadística inferencial aplicada a dos muestras: ingenieros que laboran en empresas y estudiantes de ingeniería industrial. En los resultados se han encontrado dos casos, en el primero los ingenieros en la gestión enfrentan entornos estables-estructurados y entornos complejos-amorfos por igual, empleando indistintamente herramientas con soluciones exactas y cuantitativas y herramientas amorfas y heurísticas con soluciones aproximadas, en el segundo caso los estudiantes de ingeniería manifiestan mayor predisposición al empleo de técnicas sistemáticas con poca consideración de los aspectos humanos. Se ha de considerar si las técnicas de ingeniería industrial son suficientes para resolver problemas, o se requiere la incorporación de nuevas herramientas de análisis y decisión, menos exactos y más aproximados e intuitivos.
Simulación de la actividad respiratoria en pos-cosecha de plátano (musa cavendishii) bajo atmósfera modificada para mejora del tiempo de almacenamiento
Authors: Najarro Barrientos Juan , Tinoco Gómez Oscar , Huari Evangelista Félix
Published: December 2016

La investigación consistió en la aplicación de métodos numéricos capaces de describir las curvas típicas de consumo de O2 y producción de CO2 de frutas empacadas en atmosfera modificada, considerando las constantes de Michaelis Menten durante la respiración. Mediante el lenguaje Visual Basic se elaboró un programa, cuyos resultados fueron validados aplicando datos experimentales obtenidos por Song et al. (1992) y valores experimentales obtenidos en el laboratorio de Análisis de alimentos de la Facultad de Ingeniería Química y Metalurgia de la Universidad del Callao. Llegando a las siguientes conclusiones: Las Ecuaciones Diferenciales ordinarias facilitan la cuantificación de oxigeno residual y dióxido de carbono dentro del empaque de vegetales bajo atmosfera modificada. El dióxido de carbono es estable a partir de las 30 horas de almacenamiento del plátano. El programa elaborado tuvo comportamiento satisfactorio para el fruto del plátano.
Four new species of the Aleiodes compressor Herrich-Schäffer species-group (Hymenoptera: Braconidae: Rogadinae) from South America
Authors: Sulca Lidia , Shimbori Eduardo Mitio , Shaw Scott Richard
Published: December 2016

Four new species of the Aleiodes compressor (Herrich-Schäffer) species-group from the Neotropical Region are described and illustrated: Aleiodes segakiato sp. nov. and A. lamasi sp. nov. from Peru, A. macro sp. nov. from Argentina, and A. palmito sp. nov. from Mexico. With the addition of these new species, the compressor species-group has ten known species; two from Old World, two from Nearctic Region, and six from Neotropical Region. In addition to the descriptions of the new species, a key to known species is presented, and a new distribution record for A. mantiqueirensis Shimbori, Shaw and Penteado-Dias from Ecuador is reported.