bluuebunny/crossref_metadata_2025 huggingface dataset:
The Effects of Multicultural Adolescents' Trauma and Hopelessness on Problem Behaviors in South Korea
Authors: Kim Kyungsook , Kim Min-Jung , Kim Minkyeong , Ju Sejin , Song Eun-Jee
Published: August 2018

The purpose of this article was to examine the effects of multicultural adolescents' trauma and hopelessness on problem behaviors. The research subjects consisted of 108 adolescents (boys = 54, girls = 54 from multicultural families. They were adolescents aged between 12 and 20. The measures of the current study include scales for assessing adolescents' trauma, hopelessness, and problem behaviors. The data was analyzed using Pearson correlations, SPSS 21.0 program and AMOS 18.0 Structural Equation Modeling (SEM). Results demonstrated that multicultural adolescents' trauma, hopelessness, and problem behaviors were significantly correlated. Also, trauma had an indirect effect through hopelessness, as well as a direct effect on problem behaviors of adolescents. The importance of adolescents' cognition was identified on problem behaviors.
Influencing Factors on Health-Related Quality of Life in Middle-Aged Adults With Hypertension
Authors: Lee Eunjoo
Published: August 2018

This article aims to examine the influencing factors on health-related quality of life (HRQOL) in middle-aged adults with hypertension. HRQOL was assessed using EQ-5D from 263 middle-aged adults (40-60 years) with hypertension who participated in the 6th Korean National Health and Nutrition Examination Survey (2014). There were statistically significant differences in health-related quality of life according to income, education, subjective health status, experience of discomfort, activity limitation, stress, and aerobic physical activity. Factors influencing on health-related quality of life in middle-aged adults with hypertension were subjective health status, experience of discomfort, activity limitation, depression, and stress, which explained about 50% of total variance. These factors should be included in the nursing intervention, and psychological aspects such as depression should be emphasized.
Information and knowledge sharing within virtual communities of practice
Authors: Ogbamichael Hermon B. , Warden Stuart
Published: August 2018

Background: The concept of a virtual community of practice (VCoP) emanates from the need to create a new mode of learning and knowledge development platform. It has also been found that highly structured forums are not always the best way to assist people to learn and improve their knowledge. The first author (main researcher) has limited background knowledge and professional practice in the area of VCoPs. Within this context, the investigation of the use of VCoPs to optimise knowledge sharing within stakeholders is the central theme of this research. The authors adapted the life cycle knowledge flow model and present an extended model that resulted after an empirical research was conducted with various VCoPs. Objectives: The objective of this paper is to report on the research that, firstly, attempted to find a suitable model among all previous research conducted on knowledge sharing (management) and to create a new model that could be used to optimise knowledge sharing within VCoPs. Method: In this research, a review of literature was used to define the main concepts of this research. A qualitative methodology was used. The responses received using two questionnaires were analysed to establish some premise, derived from the findings. The Miles and Huberman framework for qualitative analysis was also used to analyse the data set received from participants in the two questionnaires administered. This framework for analysis includes data reduction, data display, drawing and verifying conclusions. Results: An extended life cycle knowledge flow model is proposed to optimise knowledge sharing within VCoPs. Conclusion: A comprehensive knowledge flow model, namely the extended life cycle knowledge flow model, was found to be most suited from the literature. The analysis of two questionnaires, one administered in 2011–2012 and the other in 2016, led to the adaptation of the model to enhance knowledge sharing within VCoPs and, in turn, to develop and optimise knowledge sharing in enterprises.
The representation of the temporal notion of post-colonial Africa in South African history textbooks
Authors: Maposa Marshall T.
Published: August 2018

This article is premised on the current (2015–2016) developments in South Africa whereby the country’s youth are increasingly engaging in discourses of South Africa’s post-colonial condition and the need for decolonisation. But how do the history textbooks that they use in schools construct this contentious post-colonial period? On this basis, the main objective is to examine the temporal representation of post-colonial Africa in South African history textbooks. Critical discourse analysis was applied on a sample of four National Curriculum Statement-aligned textbooks with a focus on sections that covered content on post-colonial Africa. The findings from the textual analysis show that the temporal notion of post-colonial Africa is not clearly framed within a particular period. The ambiguity of the temporal notion, a fundamental concept in history, stems from the fact that the lexicalisations used as time markers in the textbooks cannot be linked to one particular date, resulting in a post-colonial Africa whose beginning and – more specifically – end cannot be unambiguously determined. The textbooks also sometimes refer to the post-colonial period as singular, whereas in other cases they describe the period as consisting of different phases. I conclude that such ambiguity reveals a loophole in educating the learners about a period whose circumstances they are trying to not only engage but also transform.
Clinicopathological Correlation of Adenoid Cystic Carcinoma: A Notorious Masquerader and Clinical Paradox
Authors: Sharma Preeti , Jha Vidya , Mandal Ashish Kumar
Published: August 2018

Background: Adenoid cystic carcinoma (ACC) is an uncommon tumor with nonspecific clinicoradiological features thereby masquerading other nonneoplastic and neoplastic entities. Materials and Methods: Cases of ACC were retrospectively reviewed over a period of 4 years. The clinical details of these patients including fine-needle aspiration cytology (FNAC) and imaging findings were retrieved. Diagnosis was confirmed on histomorphology and supplemented with immunohistochemistry (IHC). Results:: Thirty cases of ACC were included in the study. Mean patient age was 55.5 years with a slight female preponderance. Among the 30 ACCs, 10 (33.4%) were located in submandibular gland, 7 (23.4%) in parotid gland, 6 (20%) in sublingual gland, 2 (6.7%) in lung and one each (3.33%) in nasal cavity, breast, cervix, lip, and skin of face. Preoperative imaging was suggestive of malignancy in 29 cases while a single case of parotid gland ACC was misdiagnosed as benign salivary gland neoplasm. FNAC was performed in 29 cases with a diagnostic accuracy of 82.7%. Histopathological examination showed characteristic features of ACC in all cases with perineural invasion seen in 7 cases. On IHC, positivity for cytokeratin was seen in all cases, cluster of differentiation 117 in 24 cases, thyroid transcription factor-1 in two cases and human epidermal growth factor receptor/neu in two cases. All cases were negative for estrogen receptor and progesterone receptor IHC. Mean Ki-67 score was 47.8%. Conclusion: ACCs are notorious tumors showing slow growth kinetics with propensity for perineural invasion, late recurrences, and distant metastasis. It should be kept in mind as a differential diagnosis at unusual sites other than salivary glands.
Demographic Profile of Pediatric Malignancies in Himachal Pradesh
Authors: Badhan Anupam , Bhardwaj Parveen , Yadav Vijay , Grover Neelam , Seem Rajeev Kumar
Published: August 2018

Context: Pediatric malignancy is on the rise worldwide, and it is imperative to know the profile of pediatric malignancy in different geographical areas so as to formulate effective strategy to its control. As there are no data from this part, especially the Himalayan region of North India, the present study was planned. Aims: The aims of this study were to study the pattern and demographic profile of pediatric malignancies at a tertiary care teaching hospital in Himachal Pradesh. Settings and Design: This was a hospital-based, prospective, nonrandomized, observational study. Subjects and Methods: Pattern and demographic profile of clinically suspected malignancies in children and adolescents (0–18 years) over a period of 1 year from June 2012 to May 2013 in the Department of Pediatrics and Radiotherapy. Statistical Analysis Used: Data were analyzed statistically using Epi Info software for all ratios and proportions. Results:: A total of 31 children were diagnosed to have malignancy, which accounted for 0.86% of total admissions with a male-to-female ratio of 1.58:1.The three most common childhood malignancies were leukemia (29.03%), central nervous system (CNS) tumors (25.80%), and lymphoma (19.35%), and these were followed by Wilm's tumor and hepatoblastoma, each accounting for 06.45% of total childhood malignancies. Hematological malignancies accounted for 48.38% and nonhematological malignancies for 51.62% of all the malignancies. Acute lymphoblastic leukemia was the most common hematological malignancy noted in 22.58%, followed equally by Hodgkin's disease and non-Hodgkin's lymphoma (20% of total hematological malignancies). Among nonhematological malignancies, CNS malignancies were the most common. In the age group of 0–5 years, all cases of neuroblastoma, yolk sac tumor, and ovarian tumor and 50% cases of hepatoblastoma and Wilm's tumor were seen. In the age group of 5–10 years, leukemia (44.44%) was the most common malignancy followed by lymphoma (33.33%). In 14–18 years, CNS malignancies (50%) were the most common malignancies followed by lymphoma (33.33%). Conclusions: Hematological malignancies are the most common malignancies in the pediatric age group, and acute leukemia was the single most common pediatric malignancy, and CNS malignancies were the most common nonhematological malignancies.
Sclerosing Ovarian Tumor with Disrupted Morphology: Significance of Ancillary Tests in Resolving Diagnostic Dilemma
Authors: Rao Shalinee , Muralitharan Susruthan , Narayanan Cunnigaiper Dhanasekharan
Published: August 2018

Sclerosing stromal tumor is an uncommon subtype of sex cord–stromal tumor of the ovary. It occurs in young females who present with pelvic pain and menstrual irregularities. We present a case of an 18-year-old female who was brought to emergency room with a history of blunt trauma abdomen after road traffic accident. A diagnosis of hemoperitoneum was made, and the patient underwent emergency exploratory laparotomy. An incidental right ovarian mass was found which was removed and sent for histopathological examination. Histomorphology of this lesion showed variable findings with extensive edema and paucicellularity. Few thin wall blood vessels were also observed. The possible differential diagnosis on gross and microscopic examination included sclerosing stromal tumor, fibroma, thecomas, granulosa cell tumor, and edema of the ovary. In view of diagnostic dilemma, special stains for collagen and reticulin were done. In addition, immunohistochemistry (IHC) for CD99, smooth muscle actin, and desmin was put up. A diagnosis of sclerosing tumor of the ovary was made based on histomorphology and findings of ancillary tests. In general, ancillary tests are not required to diagnose sclerosing ovarian tumor as it has characteristic histological features. This case highlights the usefulness of special stains and IHC in sex cord tumors with overlapping microscopic features.
Unusual Presentation of Wilms' Tumor as Umbilical Granuloma
Authors: Hegde Shalini Gajanan , Menon Prema , Narasimha Rao Katragadda Lakshmi , Nada Ritambhra
Published: August 2018

We report an unusual presentation of a Wilms' tumor in an 8-month-old child, incidentally detected by ultrasonography for an umbilical granuloma. A patent vitellointestinal duct anomaly required surgical excision in the same sitting as the nephroureterectomy. The case is reported for the unusual coexistence and the management implications.
Carcinoma Buccal Mucosa Presenting as Ocular Metastasis to the Choroid
Authors: Jyoti Poddar , Ashutosh Sharma , Maitrik J Mehta , Ubrangala Kunikullaya Suryanarayana
Published: August 2018

Metastasis to eyes from a head and neck carcinoma is a rare event. A 62-year-old male presented with carcinoma of the left buccal mucosa. The patient was operated and was pathological stage pT2N0Mx. The patient was advised adjuvant postoperative radiotherapy (60Gray/30#). During the treatment, he presented with progressive diminution of vision in the left eye. He was investigated and was found to have choroidal secondaries in the left eye involving 80% of the globe. On positron emission tomography-computed tomography scan, no metastatic lesion was found elsewhere in the body. Ocular metastasis in a case of T2NOMx without pulmonary metastasis is a rare event.
Atypical Presentation of Primary Ewing's Sarcoma
Authors: Jeniffer Nancy V , Panduranga Arpitha , Karunakara BK
Published: August 2018

Ewing's sarcoma is the second most common bone tumor in children and adolescents. Its annual incidence is 0.6/million total population worldwide, and in some populations in India, its incidence can account for 15%–19.4% of the primary bone tumors. Ewing's sarcoma is a highly malignant round cell tumor, affecting the metadiaphyseal and the diaphyseal regions of the long bones. Spine involvement, as a primary focus in Ewings sarcoma is uncommon, but when present, usually affects the sacrum. Origin from non sacral region is extremely rare. We report a case of acute onset of paraplegia progressing to quadriplegia in a child with metastatic involvement of the spine, primary focus being the nonsacral spine which is inherently challenging to an early diagnosis. Ewing's sarcoma though has improved survival with chemotherapy and radiotherapy, primary spine focus has poor prognosis.
Recurrent Anthrax Outbreaks in Humans, Livestock, and Wildlife in the Same Locality, Kenya, 2014–2017
Authors: Muturi Mathew , Gachohi John , Mwatondo Athman , Lekolool Isaac , Gakuya Francis , Bett Alice , Osoro Eric , Bitek Austine , Thumbi S. Mwangi , Munyua Peninah , Oyas Harry , Njagi Obadiah N. , Bett Bernard , Njenga M. Kariuki
Published: August 2018

Epidemiologic data indicate a global distribution of anthrax outbreaks associated with certain ecosystems that promote survival and viability of Bacillus anthracis spores. Here, we characterized three anthrax outbreaks involving humans, livestock, and wildlife that occurred in the same locality in Kenya between 2014 and 2017. Clinical and epidemiologic data on the outbreaks were collected using active case finding and review of human, livestock, and wildlife health records. Information on temporal and spatial distribution of prior outbreaks in the area was collected using participatory epidemiology. The 2014–2017 outbreaks in Nakuru West subcounty affected 15 of 71 people who had contact with infected cattle (attack rate = 21.1%), including seven with gastrointestinal, six with cutaneous, and two with oropharyngeal forms of the disease. Two (13.3%) gastrointestinal human anthrax cases died. No human cases were associated with infected wildlife. Of the 54 cattle owned in 11 households affected, 20 died (attack rate = 37%). The 2015 outbreak resulted in death of 10.5% of the affected herbivorous wildlife at Lake Nakuru National Park, including 745 of 4,500 African buffaloes (species-specific mortality rate = 17%) and three of 18 endangered white rhinos (species-specific mortality rate = 16%). The species mortality rate ranged from 1% to 5% for the other affected wildlife species. Participatory epidemiology identified prior outbreaks between 1973 and 2011 in the same area. The frequency and severity of outbreaks in this area suggests that it is an anthrax hotspot ideal for investigating risk factors associated with long-term survival of anthrax spores and outbreak occurrence.
Stochastic generation of spatially coherent river discharge peaks for
large-scale, event-based flood risk assessment
Authors: Diederen Dirk , Liu Ye , Gouldby Ben , Diermanse Ferdinand , Vorogushyn Sergiy
Published: August 2018

Abstract. Flood risk assessments are required for long-term planning, e.g. for investments in infrastructure and other urban capital. Vorogushyn et al. (2018) call for new methods in large-scale Flood Risk Assessment (FRA) to enable the capturing of system interactions and feedbacks. With the increase of computational power, large-scale, continental FRAs have recently become feasible (Ward et al., 2013; Alfieri et al., 2014; Dottori et al., 2016; Vousdoukas, 2016; Winsemius et al., 2016; Paprotny et al., 2017). Flood events cause large damages worldwide (Desai et al., 2015). Moreover, widespread flooding can potentially cause large damage in a short time window. Therefore, large-scale (e.g. pan-European) events and for instance maximum probable damages are of interest, in particular for the (re)insurance industry, because they want to know the chance of their widespread portfolio of assets getting affected by large-scale events (Jongman et al., 2014). Using a pan-European data set of modelled, gridded river discharge data, we tracked discharge waves in all major European river basins. We synthetically generated a large catalogue of synthetic, pan-European events, consisting of spatially coherent discharge peak sets.
The Promise and Perils of Radical Left Populism: The Case of Venezuela
Authors: Hetland Gabriel
Published: August 2018

Mainstream critics argue that populism inevitably leads to economic disaster and political authoritarianism. Venezuela is often pointed to as proof of this. Yet, while the profound crisis gripping Venezuela is undeniable, comprehensive analysis of Chavismo shows that populism, and specifically the radical left populism found in Venezuela, is more ambiguous. From 2005-2013 radical left populism in Venezuela reduced poverty and inequality, deepened democracy, and built popular support for a “transition to socialism.” These gains were erased in the post-2014 crisis, which revealed two flaws of the Chavista model hidden by its earlier success: its unsustainable material foundation and inability to overcome the statist trap. For radical left populism to achieve its potential, and avoid peril, these two problems must be effectively addressed.
Editors' Introduction
Authors: Smith Jackie , Bair Jennifer , Manning Patrick , Ruvolo David
Published: August 2018

N/A
Difficulties of Learning English Language at the Secondary Level: A Case Study of Thakurgaon District
Authors: Hossain Md. Amir
Published: August 2018

The aim of this paper is to examine the complexities of learning English Language among the SSC level learners of Lahiri High School under Thakurgaon District, a northern part of Bangladesh. Many students don’t receive Standard Education of English due to knowledgeable teachers, financial constraints, lack of multimedia project teaching and learning system, and lack of English Language Club.  It aims to look at motivating the young learners so that they can be able to develop the basic knowledge of four skills despite depriving of ultra-modern facilities. For this purpose, the current researcher collected date through questionnaire and interview process. 15 sets of questions were provided among 15 students to find out their fundamental knowledge of English language. In the field survey, 31 participants were selected for interview, including 15 male & female students, 6 teachers, and 10 guardians. Teachers and parents expressed their different views about English language learning complexities. Participants responded that students were weak in English Grammar, Vocabulary, and Speaking Skill. After realizing their English learning complexities, the researcher came to conclusion and recommendations. Thus this study would like to show a new dimension of English Language Learning for the Secondary Level students at Thakurgaon District in Bangladesh.
The ABCs of the XYZs: Adding a Critical Dimension to Contemporary Teacher Education
Authors: Mohr Eric S. , Mohr Kathleen A.
Published: August 2018

Currently, the faculty at post-secondary institutions are mostly Baby Boomer and Generation-X (Gen X) faculty teaching Gen-Y and -Z students as undergraduates.  According to numerous social commentators, these generations tend to vary in their worldviews, and the differences can challenge the teaching-learning relationship.   In the following discussion, we would like to share some information from a few current resources that attempt to characterize and analyze the two most dominant generations among post-secondary students today.  Then, we will pose a few ways that teacher educators might seek to update their instruction for Gen-Z students.
Transformasi Nitrogen dalam Tanah Tergenang: Aplikasi Jerami Padi dan Kompos Jerami Padi
Authors: Indriyati Lilik Tri , Sabiham Supiandi , Darusman Latifah Kosim , Situmorang Rykson , Sudarsono . , Sisworo Widjang Herry
Published: August 2018

The use of organic materials aimed at reducing the dependence on inputs such as chemical fertilizers can contribute to sustainability and improving the low N fertilizer efficiency of rice plants in paddy soils.  Therefore, better understanding of N transformation in flooded soils, particularly the microbial transformation of N-organic amendments to plant-available N and gaseous N forms is needed for most efficient use of soil and organic materials N, for determining the potential of denitrification and for aiding in the selection of N management practices for sustainable agriculture.  The experiments were conducted in the laboratory and glasshouse of Soil Department, Faculty of Agriculture, Bogor Agricultural University.  An incubation experiment was conducted in the laboratory at room temperature during 120 d to analyze the mineralization-immobilization patterns in flooded soils amended with rice straw, rice straw composts 4 mo and 8 mo and their combinations with urea.  The first time of soil flooding, mineral N (N-NH4+ and N-NO3-) concentrations in all of the amended soils sharply decreased and those gradually increase since 7 d of incubation.  It might be due to the reduction of N-NO3- to N2O and N2, and immobilization.  This data was consistent with the data of N2O emission derived from pot experiment.  The high emission of N2O was observed at the first time of soil flooding of the amended soils, and the soils added rice straw showed the largest N2O emission than the other treatments. It might be due to the change of soil condition from aerobic to anaerobic condition, and the higher decomposable C as energy source for denitrifyer contained in rice straw.  Regardless the organic materials added to soils, the longer anaerobic condition, nitrification sharply decreased, so that nitrate availability limits denitrifications.decreased, so that nitrate availability limits denitrifications.
Pemanfaatan Tithonia Diversifolia pada Tanah Sawah yang Dipupuk P Secara Starter terhadap Produksi serta Serapan Hara N, P, dan K Tanaman Padi
Authors: Gusnidar . , Prasetyo Teguh Budi
Published: August 2018

The research of Tithonia diversifolia utilization in the paddy soil that was fertilized P-starter on yield and N, P, K uptake on rice crop, has been conducted from August to December 2005.  The objective of this research was to determine interaction between P-starter levels, and tithonia levels on production and N, P, K element uptake of rice crop. The research was pot experiment in the green house in factorial design 4 x 4.  First factor was 4 levels of tithonia with reduce dosage fertilizer aplied (T0 = 0 t tithonia + 200 kgUrea ha-1 + 75 kg KCl ha-1; T1= 2,5 t tithonia ha-1 + 150 kg Urea ha-1, without KCl; T2 = 5,0 t tithonia ha-1 + 100 kg Urea ha-1, without KCl; dan T3 = 7,5 t tithonia ha-1 + 50 kg Urea ha-1, without KCl).  The second factor was 4 levels of P-starter (0, 2, 4, and 6 kg P ha-1).  The result showed that combination T3 treatment and 2-4 kg P-starter ha-1 increased the grain yield 20,51-21,08 g pot-1 (18,65-19,21%). Effect of T3 treatment was not significant with T2 treatment on the grain yield.  The best interaction was T3 treatment on N and K uptake ((0,84 g pot-1 for N, dan 0,82 g pot-1 for K).
Sifat Fisik, Kimia dan FTIR Spektrofotometri Gambut Hidrofobik Kalimantan Tengah
Authors: Utami Sri Nuryani Hidayah , Maas Azwar , Radjagukguk Bostang , Purwanto Benito Heru
Published: August 2018

Peat soils naturally have hydrophilic or waterloving character with highly capable of exchanging the cations and cycling the nutrients from the vegetations. This water-loving character is altered to water-repellent character in hydrophobic peat soils. This research was aimed toobserve deeply the functional bunch carrier of hydrophobic and hydrophilic peat soils as shown by FTIR spectra in relation with inherent chemical and physical properties of the soils. Five peat soils consisted of two native andartificial hydrophobic peat soils and one sample of hydrophilic peat soils were studied. Artificial hydrophobic peat soils were yielded by oven-drying the native hydrophobic peat soils at 50 oC for 10 hours. FTIR spectra can distinguish the functional bunch carrier of hydrophobic and hydrophilic peat soils. FTIR spectra of hydrophobic peat soils showed degradation of hydrophilic bunch carrier (OH and COOH) and increase of the hydrophobic bunch carrier (tying aromatic from esther and ether). Chemical analysis of the hydrophobic peat soils also indicated the decrease of OH and COOH content, decrease of CEC , soil total acidity and soil moisture content.
Hubungan antara Konsentrasi Cr(VI) dan Sifat Kimia Tanah: Informasi Awal untuk Remediasi Lahan Bekas Tambang di Kalimantan Selatan
Authors: Saidy Akhmad Rizalli , Badruzsaufari .
Published: August 2018

High concentration of heavy metals is frequently observed as an effect of mining activity. In order to determine relationship between concentration of Cr(VI) in ex-mined land and soil chemical characteristics, 15 of soils were sampled from ex-coal and chromate mined-lands in the South Kalimantan Province. Result of the experiment revealed that soils from the ex-mined lands contained 700 - 2645 mg Cr kg-1 soil. This research also showed that 0,73-1,35% of total Cr in these soils exist in the form of hexavalent chromium (Cr(VI)) that is toxic and carcinogen. Concentration of Cr(VI) in these soils were correlated significantly with soil pH in which increasing soil pH would lead to increase in concentration of Cr(VI). In addition, increasing in soil organic carbon will be followed by decreasing concentration of Cr(VI). Relationship between concentration of Cr(VI) and soil pH and organic carbon content could be useful for preliminary information for Cr reclamation of ex-mined lands.
Relationship between Soil Health Assessment and the Growth of Lettuce
Authors: Riwandi . , Handajaningsih Merakati
Published: August 2018

Soil health is very important point for plant growth which is measured by several indicators. The purposes of the research were to assess and to classify soil health Padang Betuah area of Bengkulu, and to compare between soil health indicators and lettuce plant performance indicators. Soils, consist of mineral and peat soils, were sampled using a soil random sampling technique. Lettuce plants were grown in polybags using sample soils. Both lettuce performance and soil health were assessed by calculating the percentage of total scores of lettuce plant or soil performance indicators which derived from variables observed. Soil variables for field evaluation included color, moisture content, texture, structure, compaction, land slope, organic matter, pH, amount of earthworm, erosion level, LCC (Legume Cover Crop), and vegetation performance. Soil variables for laboratory evaluation were pH, electrical conductivity (EC), total Carbon and Nitrogen, available-Posphorus, cation exchangeable capacity, basesaturation, and aluminum saturation. While, the variables for lettuce growth performance included plant height, numbers of leaf, degree of leaf greenness, plant fresh weight, and relative percentage of shoot : root ratio. The results of field and laboratory evaluation showed that soil health were categoried as a healthy soil and moderate healthy soil both for mineral and peat soils, respectively. Furthermore, similar categories were also obtained for evaluation of plant performance categories. No correlation was found between the soil performance indicatorcategory and the lettuce performance category.Keywords: Field indicator, laboratory indicator, lettuce growth indicator, soil health
Side Effects of Nitrification Inhibitors on Non Target Microbial Processes in Soils
Authors: Tindaon Ferisman , Benckiser Gero , Ottow Carl Gottlieb
Published: August 2018

Agricultural chemicals have been used extensively in modern agriculture and toxicological studies suggest a great potential for inducing undesirable effects on non target organisms. A model experiment was conducted in order to determine side effects of three nitrification inhibitors (NIs, 3,4dimethylpyrazolephosphate = DMPP, 4-Chlormethylpyrazole phosphate = ClMPP and dicyandiamide = DCD) on non target microbial processes in soils. Side effects and dose response curve of three NIs were quantified under laboratory conditions using silty clay, loam anda sandy soils. Dehydrogenase, dimethylsulfoxide reductase as well as nitrogenase activity (NA) and potential denitrification capacity were measured as common and specific non target microbial processes. The influence of 5-1000 times the base concentration, dose response curves were examined, and no observable effect level = NOEL, as well as effective dose ED10 and ED50 (10% and 50% inhibition) were calculated. The NOEL for microbial non target processes were about 30–70 times higher than base concentration in all investigated soils. The potential denitrification capacity revealed to be the most sensitive parameter. ClMPP exhibited the strongest influence on the non target microbial processes in the three soils. The NOEL, ED10 and ED50 values were higher in clay than in loamy or sandy soil. The NIs was the most effective in sandy soils.Keywords: microbial non target processes, nitrification inhibitors, soil enzymes
Effect of Coffee Pulp Compost and Terrace on Erosion, Run off and Nutrients Loss from Coffee Plantation in Lahat Regency, South Sumatra
Authors: Bernas Siti Masreah
Published: August 2018

On some coffee plantations in Lahat Regency South Sumatra, in some places the farmers did not apply agricultural practices, such as tillage, conservation practices, and fertilizers. Many researches have been done to study about effects of organic fertilizer on soil nutrients content and plant growth as well as and the impacts of terrace on soil water content, run-off and erosion. However, there was less research in the highland area. Whereas the possibilityof run off, erosion and nutrient leaching the high land area was high. Thus, it was important to apply terrace and organic coffee pulp in this farm. The aims of this research were to determine the effect of terrace and organic fertilizer on run off and soil erosion, nutrients loss and nutrient content in coffee leaves. Terrace system and organic fertilizer were applied on a one year old coffee plantation in Lahat Regency. Before the treatment applied,coffee pulp as organic fertilizer was decomposed in the chamber for about 2 months. The experiment was conducted in factorial in a Randomized Block Design with two factors. The first factor was coffee pulp compost (0, 3, and 6 Mg ha-1), and the second factor was type of terrace (without, individual, and bund terraces). The size of each plot was 2 m width and 10 m length. Data was analysed by using LSD (Least Significant Different) test. The resultshows that bund terrace reduced runoff and erosion significantly up to 79% (for run off water) and 78% (for eroded soil) compared to without terrace. Organic fertilizer did not affect run off and soil erosion. This may be caused by properties of coffee pulp compost which were fine particulates and the dosages of application were too low to cover soil suface. Bund terrace decreased significantly N, P, K nutrients in soil loss (sediment). The amount of N losswas reduced from 3.37 kg ha-1 per four months (without terrace) to about 0.75 kg ha-1 per four months (bund terrace). Terrace and organic fertilizer did not affect significantly nutrients content in the leaves, but P-content was low without organic fertilizer addition. It is suggested to apply bund terrace and higher organic fertilizer dose on the coffee farm, and further experiments when harvesting the yield (berries) are needed for the second year oldcoffee farm.Keywords: Coffee, compost, erosion, nutrient, pulp, terrace
Zeolite and Hucalcia as Coating Material for Improving Quality of NPK Fertilizer in Costal Sandy Soil
Authors: Sulakhudin . , Syukur Abdul , Sunarminto Bambang Hendro
Published: August 2018

The growth and yield of plants are mainly a function of the quantity of fertilizer and water. In coastal sandy soil, nutrient losses and dry soils are seriously problems. The objective of the research was to study effect of zeolite and hucalci concentrations as NPK coating materials on NPK qualities i.e. water adsorption and release of N, P and K. The research used a coastal sandy soil as media. It was conducted in a laboratory of Soil Science Department, Gadjah Mada University from July to August 2009. Experimental design used was a factorial in a completely randomized design. The first factor was hucalci concentration, consisted of 10% (H1), 20% (H2), and 30% (H3). The second factor was zeolite concentration, consisted of 25% (Z1), 50% (Z2), 75% (Z3), and 100% (Z4). NPK fertilizer (without coating) used as a control. The results showed that hucalci and zeolite had a capability to increase water adsorption and to retard the release of N, P, K. The coated NPK with hucalci 30% and zeolite 100% had the highest quality in water absorption, water retention and release of nutrients.Keywords: Coastal sandy soil, humic-calcium, NPK fertilizer, zeolite
The Changes of P-fractions and Solubility of Phosphate Rock in Ultisol Treated by Organic Matter and Phosphate Rock
Authors: Djuniwati Sri , Nugroho Budi , Pulunggono Heru Bagus
Published: August 2018

Phosphorus (P) is one of the essential elements for plant, however, its availability is mostly very low in acid soils. It is well documented that application of phosphate rock and organic matter are able to change the level of availability of P-form in acid soils.  The objective of the research were to evaluate the changes of P-fractions ( resin-P, NaHCO3-Pi, and NaHCO3-Po) and phosphate rock dissolution which were induced by application of organic matter (Imperata cylindrica, Pueraria javanica, dan Colopogonium mucunoides) and phosphate rock in Utisol Lampung.  The experiment was designed in a completely randomized design with three factors and three replications.  The first factor was the types of organic matter (I. cylindrica, P. javanica, and C. mucunoides), the second factor was the rate of organic matter (0, 2.5, and 5%), and the third factor was the rate of phosphate rock (0, 40, and 80 mg P kg-1).  The results showed that in the  rate of 0 and 1% organic matter, the type of organic matter did not affect P-fraction of NaHCO3-Pi, but in the rate of 2.5 and 5%,  NaHCO3-Pi due to application of  P. javanica, and C. mucunoides higher than due to application of  I. cylindrica.  However, the increasing rate of organic matter increased NaHCO3-Pi. Then, P-fraction of Resin-Pi was affected by the type of organic matter, the rate of  organic matter, and the rate of phosphate rock, respectively. P-fraction of resin-Pi due to application of P.  javanica, and C. mucunoides was higher than due to application of  I. cylindrica, but the effect of  P. javanica, and C. mucunoides was not different.  Increasing the rate of organic matter and phosphate rock increased P-fraction of resin-Pi and NaHCO3-Pi, but P-fraction of NaHCO3-Po was not affected by all treatments.  Meanwhile, dissolution of phosphate rock was affected by the kind of organic matter and soil reaction.  In the rate of 5% organic matter, dissolution of  phosphate rock by application of                                     I. cylindrica (70%) was higher than P. javanica (26.6%), and C.  mucunoides (33.5%), but in the rate of 1%, the effect of I. cylindrica , P. javanica, and C. mucunoides were not different.Keywords: C. mucunoides; I. cylindrica; P. javanica; phosphate rock; P-fractions[How to Cite: Djuniwati S, B Nugroho, and HB Pulunggono. 2012. The Changes of P-fractions and Solubility of Phosphate Rock in Ultisol Treated by Organic Matter and Phosphate Rock. J Trop Soils, 17: 203-210. doi: 10.5400/jts.2012.17.3.203][Permalink/DOI: www.dx.doi.org/10.5400/jts.2012.17.3.203]
Constant curvature surfaces in a pseudo-isotropic space
Authors: Aydin Muhittin Evren
Published: August 2018

In this study, we deal with the local structure of curves and surfaces immersed in a pseudo-isotropic space $\mathbb{I}_{p}^{3}$ that is a particular Cayley-Klein space. We provide the formulas of curvature, torsion and Frenet trihedron for spacelike and timelike curves, respectively. The causal character of all admissible surfaces in $\mathbb{I}_{p}^{3}$ has to be timelike up to its absolute. We introduce the formulas of Gaussian and mean curvature for timelike surfaces in $\mathbb{I}_{p}^{3}$. As applications, we describe the surfaces of revolution which are the orbits of a plane curve under a hyperbolic rotation with constant Gaussian and mean curvature.
Citizen Participation in Local Planning Józefosław
Case Study
Authors: Mirecka Małgorzata , Majda Tomasz
Published: August 2018

Citizen participation in the city development planning process is guaranteed by law in every civil society. In Poland, the participation of local communities
in spatial planning has been evolving since the political transformation of the years 1989/1990. Changes that occur in the participation
process are a result of the formation of civil society and a resulting increase in social awareness on possibilities of expressing one's needs and influencing
planning decisions of local governments, as well as modifications in laws and regulations.
The article presents the experience gathered in the field of extended social participation in the procedure of drawing up local spatial development
plans, on the example of ongoing work on plans for the village of Józefosław in Piaseczno, nearby Warsaw. The problems identified in the area covered
by the plans and their origins have been characterized, the assumptions of the plans, whose main purpose is to alleviate diagnosed problems and
respond to the needs of the inhabitants, articulated at various stages of the planning process. Then the scope and results of the various phases of social
participation – preplanning and based on formal planning procedures – have been described.
The experience gained from the phase of public consultation during the preparation of local plans for the village of Józefosław allowed us to draw
more general conclusions about participatory procedures specified in the binding regulations, which were included in the summary.
Application of the three dimensional models for the public participation in urban design and spatial planning
Authors: Jachimowicz Anna Małgorzata
Published: August 2018

This paper describes an application of three-dimensional (also “3D”) models respectively to selected types of citizen participation. Detailed descriptions of those types are in the beginning of paper, because they are a starting points to consider using 3D models in public participation in urban design and spatial planning. In this paper, the selected software, that supports urban planners in preparing, carrying out and evaluate of participation process, has been discussed. The aim of this paper is to present the application of various tools, which allow generation of 3D models, suitable to selected methods of participation.
Determinantes do empreendedorismo no Rio Grande do Sul: uma análise espacial
Authors: Höher Ricardo , De Lima Mário Jaime Gomes , Fochezatto Adelar
Published: August 2018

O objetivo do presente trabalho foi testar a hipótese de que regiões, no Estado do Rio Grande do Sul, com elevado nível de urbanização, educação formal e renda per capita, tendem a ter um maior grau de empreendedorismo, buscando-se identificar o empreendedorismo espacialmente e diferenciá-lo em “de oportunidade” ou “de necessidade”. Para isto, foi realizada, como metodologia proposta para este trabalho, uma Análise Exploratória de Dados Espaciais (AEDE), utilizando-se o Índice de Moran e indicadores de associação espacial local. A partir da aplicação da metodologia proposta e dos resultados encontrados, teve-se confirmada a hipótese. Assim, pode-se concluir, primeiramente, que o empreendedor local tende a criar novos negócios em função de oportunidades e, depois, que a Serra Gaúcha se apresenta como a região com maior propensão para o empreendedorismo no Estado do Rio Grande do Sul.
Perinatal Hypoxic-Ischemic Encephalopathy Among a Large Public Hospital Population
Authors: Chalak Lina F. , Bitar Lynn , Kota Srinivas
Published: November 2024

This cohort study evaluates an increase in perinatal hypoxic-ischemic encephalopathy among a large public hospital population in Texas.
Microneedle‐Loaded Gene‐Editable Nanohybrids Engineer Cancer Cells by Telomere Stress Induction and Metabolic Interference for Enhanced Cuproptosis and Immunotherapy
Authors: Luan Xiaowei , Du Shiyu , Liu Zhiyong , He Bangshun , Pan Yongchun , Yang Jian , Li Yanyan , Kong Desheng , Han Xin , Song Yujun
Published: November 2024

Cuproptosis, a novel copper‐driven cell death, offers potential for cancer therapy, yet challenges persist in targeted delivery of copper ions and therapeutic resistance management. Here, CuTG‐Cas9@PLL, a cuproptosis nano‐inducer for efficient delivery of Cu ions, 6‐Thio‐dG (6‐thio‐2′‐deoxyguanosine), and CRISPR/Cas9 to enhance cuproptosis and immunotherapy via telomere stress and metabolic interference is developed. This system, combined with microneedle patches for transdermal delivery in melanoma treatment, targets the “Warburg effect,” a key resistance mechanism, through CRISPR/Cas9‐mediated LDHA knockout, thereby sensitizing cancer cells to cuproptosis and reversing immune suppression. Moreover, 6‐Thio‐dG‐induced telomere stress not only amplifies cuproptosis via autophagy dysfunction but also boosts anti‐tumor immunity by increased immunogenicity of senescent cancer cells. This work presents a novel approach for developing efficient cuproptosis nano‐inducers and reports on the feasibility of enhancing cancer cuproptosis and anti‐tumor immunotherapy through telomere stress induction and CRISPR/Cas9‐mediated metabolic interference.
A 3D Macroporous Carbon NiCu Single‐Atom Catalyst for High Current Density CO2 Electroreduction
Authors: Lu Guilong , Wang Xin , Timoshenko Janis , Cuenya Beatriz Roldan , Zhao Guixia , Huang Xiubing , Schuhmann Wolfgang , Muhler Martin
Published: November 2024

Transition metal and nitrogen co‐decorated carbon materials are promising platforms for CO2 electroreduction. A hard‐template 2‐step pyrolysis method is proposed for the fabrication of highly dispersed Ni and Cu atomic active sites on a 3D macroporous carbon matrix. The pyrrolic N‐type Ni−Nx sites serve as dominant active sites toward selective CO2 electroreduction to CO. The incorporation of Cu alters the distribution of N species and simultaneously optimizes the electronic state and geometric structure of the Ni−Nx moiety, thereby improving its adsorption and activation capacity for CO2. Moreover, the isolated Cu atomic sites enhance the resistance of corresponding gas‐diffusion electrodes against electrolyte flooding. The optimal catalyst 3D NiCu‐69 achieves nearly exclusive production of CO with a Faraday efficiency (FECO) of 98% at a current density of −700 mA cm−2 in a CO2‐gas‐fed flow‐through electrolyzer and delivers a CO production rate of 1363 mol(m2s)−1, which is exceeding most reported electrocatalysts. The FECO remained as high as 94% after electrolyzing at a current density of −100 mA cm−2 for 22 h. 3D NiCu‐69 exhibits a favorable performance in both acidic and neutral conditions, with a high FECO of ≈90.2% within the current density range of −100 to −500 mA cm−2.
Soil and plant cations as affected by application of wood ash, biochar, and papermill biosolids
Authors: Manirakiza Eric , Gagnon Bernard , Ziadi Noura
Published: November 2024

Recycling woody biomass for application to croplands is one option to divert materials from landfills and simultaneously improve degraded soil properties. Considering the diversity of materials that vary widely in characteristics, an understanding of the comparative effects of a single or combined application of these byproducts is missing with regards to soil C accumulation and availability of base and metallic cations. A field study was conducted in Québec City, QC, Canada, to assess the effects relative to untreated control of wood ash (10 and 20 Mg dry wt. ha−1), pine biochar (10 Mg dry wt. ha−1), papermill biosolids (12 Mg PB dry wt. ha−1), and a combination of wood ash and PB on soil C, pH, and cations in a circumneutral loamy soil. The site was cropped to a corn (Zea mays L.)–soybean [Glycine max (L.) Merr.] rotation. All materials were applied before corn planting and the effects of treatment were followed over two growing seasons. Applying wood ash resulted in the statistically largest increases (p < 0.01) in soil pH, percentage base saturation, and Mehlich‐3 K, Ca, Mg, Zn, and Cd. Wood ash also increased K concentration in straw and total K accumulation for both plants, but its effect on plant metallic cations was limited. With a single application, PB only increased Mehlich‐3 Ca with no further effect when combined with wood ash, while pine biochar was limited to sequester soil C. Therefore, this study indicated that wood ash could benefit a corn–soybean rotation by enhancing soil quality and crop yield.
Uncommon Phosphonylation of Pyrazine‐2,3‐dicarbonitrile Derivatives via C(sp2)−CN Bond Cleavage
Authors: Volostnykh Marina V. , Enakieva Yulia Yu. , Kirakosyan Gayane A. , Grigoriev Mikhail S. , Chufarin Aleksey E. , Wang Hailong , Stuzhin Pavel A. , Gorbunova Yulia G. , Tsivadze Aslan Yu.
Published: November 2024

A direct phosphonylation of the C(sp2)−CN bond under mild catalytic and non‐catalytic reaction conditions is disclosed. Pyrazine‐2,3‐dicarbonitriles are readily coupled with HPO(OEt)2 to produce the corresponding dialkoxyphosphoryl‐substituted pyrazines. The phosphonylation reaction occurs in the presence of a base (Et3N, Cs2CO3) as nucleophilic substitution of the CN groups. The yield of target diphosphonates depends on the nature of substituents in the 5,6‐positions of the pyrazine ring: it exceeds 90 % for di‐5,6‐aryl‐substituted pyrazines and is significantly lower when electron‐donating alkyl (n‐propyl) groups are attached to the 5,6‐positions. It should be noted that for pyrazine‐2,3‐dicarbonitriles bearing vicinal 4‐bromophenyl groups, the nucleophilic phosphonylation leading to C−CN/P−H coupling in the pyrazine ring is predominant over Pd‐catalyzed Hirao's C−Br/P−H coupling reaction in phenyl rings. Detailed structural characterization, both in solution by means of 1H, 13C and 31P NMR spectroscopy and in the solid state by single crystal X‐ray diffraction, of a series of newly synthesized pyrazine phosphonates is reported.