Autor: Hadi, W. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Physicochemical Properties of Sea Water and Bittern in Indonesia: Quality Improvement and Potential Resources Utilization for Marine Environmental Sustainability
Autorzy:: Apriani, M.
Hadi, W.
Masduqi, A
Powiązania:: https://bibliotekanauki.pl/articles/124069.pdf
Data publikacji:: 2018
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: magnesium
management
recovery
sustainability
Opis:: The traditional salt production in Indonesia was investigated to report the preparation and processing of salt, determine the characteristics of sea water and bittern as well as explore the potential of bittern management with appropriate technology. Field study and comprehensive analysis were performed so as to better understand the salt making, providing valuable information for the proposal of targeted management strategies in salt quality improvement and wastewater recovery. The results show that Na⁺, Cl^– and Ca²⁺ in East Java Province seawater were found greater than the majority of values found in the literature. The highest concentrations of Na⁺, Cl^– and Ca²⁺ were measured in Camplong-Sampang District. The highest concentrations of Mg²⁺ and trace metals were recorded in Panceng-Gresik District. The trace metals found in sea water and bittern need particular concern to be removed without disposing of sea water minerals. The potential number of bittern in Indonesia promoted the development of the bittern management for magnesium recovery and achieving marine environment sustainability. High purified material recovery can be achieved by using crystallization technology.
Źródło:: Journal of Ecological Engineering; 2018, 19, 3; 1-10
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Clarification of Pharmaceutical Wastewater with Moringa Oleifera: Optimization Through Response Surface Methodology
Autorzy:: Eri, I. R.
Hadi, W.
Slamet, A.
Powiązania:: https://bibliotekanauki.pl/articles/123396.pdf
Data publikacji:: 2018
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: flocculant
Moringa oleifera
response surface methodology
Opis:: Herbal pharmaceutical industrial wastewater contains a high amount of suspended solids and alkaline (pH > 8); therefore it requires approprite coagulant and flocculant compounds for its wastewater treatment. The most widely used flocculant is a synthetic that has certain problems such as non-biodegradability and releases of toxic residual monomers. The use of eco-friendly flocculants as alternative materials for conventional flocculant in water and wastewater treatments is increasing. Numerous factors influence the performance of coagulation-flocculation process, such as coagulant dosage, flocculant dosage, initial potential of hydrogen (pH) and velocity gradient of coagulation-flocculation. The main aim of this research is to evaluate the capability and effectiveness of Moringa oleifera extract for removal of suspended solid in herbal pharmaceutical industry. A coagulation-flocculation test was done by performing jar test at various speeds, according to the variation of the conducted treatment research. In this study, response surface methodology (RSM) approach was used to optimize the concentration of coagulant dosage, flocculant dosage and flocculation velocity gradient (G), and the results were measured as maximum percentage of suspended solid removal. The wastewater used in this research originally came from the inlet of herbal pharmaceutical industry wastewater treatment plant, which was collected over 3 days. The wastewater has a total suspended solids of more than 1250 mg/L, and was alkaline (pH 9–10). The moringa extract was made from the extraction of a fat free moringa powder with a salt solution in a certain ratio. The percentage removal of suspended solid was 93.42–99.54%. The final results of the analysis of response surface showed that the variables of flocculant dosage and the flocculation velocity gradient (G) have a huge impact on the amount of suspended solid removal, compared with the coagulant dosage. The model generated from the response analysis is a quadratic model. The optimum point of the removal suspended solid quadratic model is at 10.6566 mg/L alum dosage, 13.8185 ml/L Moringa oleifera extract dosage, and G velocity of flocculation 84.845 sec^-1.
Źródło:: Journal of Ecological Engineering; 2018, 19, 3; 126-134
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: The prospective innovator in public university by scrutinizing particular personality traits
Szczegółowe badanie cech personalnych jako innowator dla uniwersytetów publicznych
Autorzy:: Abbas, E. W.
Hadi, S.
Rajiani, I.
Powiązania:: https://bibliotekanauki.pl/articles/405428.pdf
Data publikacji:: 2018
Wydawca:: Politechnika Częstochowska
Tematy:: five-factor personality
innovation
public sector
Indonesia
pięcioczynnikowa osobowość
innowacja
sektor publiczny
Indonezja
Opis:: The administrative process innovation was adopted with enthusiasm by the Western advanced industrialized countries and was taken for granted as a superior approach that should be practiced. However, public organizations in Indonesia are structured and run differently making public sector employees may have different views toward new ways of doing the job. This article aims to reveal who innovates in the organization by analyzing typical personality traits. The hypotheses are tested through a sample of 200 employees of public universities located in South Kalimantan, Indonesia, and structural equation modeling is used. Applying Hogan Personality Inventory (HPI), the five-factor personality in this research is labeled as adjustment (neuroticism), sociability (extraversion), likeability (agreeableness), prudence (conscientiousness), and school success (openness to experience). The results are discussed regarding the implications for what one can learn from individual-level studies of personality and innovation. Suggestions are offered to those universities interested in encouraging service quality in the public sector via innovation.
Innowacje w procesie administracyjnym zostały przyjęte z entuzjazmem przez zachodnie zaawansowane kraje uprzemysłowione i uznano je za oczywiste, jako nadrzędne podejście, które powinno być praktykowane. Jednak organizacje publiczne w Indonezji są zorganizowane i działają w różny sposób, sprawiając, że pracownicy sektora publicznego mogą mieć różne poglądy na nowe sposoby wykonywania pracy. Niniejszy artykuł ma na celu ujawnienie, kto wprowadza innowacje w organizacji, analizując typowe cechy osobowości. Hipotezy są testowane na próbie 200 pracowników uniwersytetów publicznych zlokalizowanych w południowym Kalimantan w Indonezji i wykorzystuje się modelowanie równań strukturalnych. Stosując Inwentarz Osobowości Hogana (HPI), pięcioczynnikowa osobowość określana jest, jako dostosowanie (neurotyczność), towarzyskość (ekstrawersja), sympatia (ugodowość), roztropność (sumienność) i sukces szkolny (otwartość na doświadczenie). Omówiono wyniki dotyczące konsekwencji, jakie można wyciągnąć z badań osobowości i innowacji na poziomie indywidualnym. Propozycje oferowane są uniwersytetom zainteresowanym promowaniem jakości usług w sektorze publicznym za pomocą innowacji.
Źródło:: Polish Journal of Management Studies; 2018, 18, 1; 9-19
2081-7452
Pojawia się w:: Polish Journal of Management Studies
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: CAD based interaction of wing structures and aerodynamic loads using finite element model and transonic small disturbance model
Autorzy:: Zain, R.
Nurhadi, I.
Hadi, B. H.
Tjatra, W.
Powiązania:: https://bibliotekanauki.pl/articles/243253.pdf
Data publikacji:: 2013
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: multidisciplinary design
fluid structure interaction
CAD
transonic small disturbance
FEM
Opis:: A scheme has been developed to be utilized for solving the interaction between wing aerodynamic loads and the flexibility of wing structures under a quasi static assumption. The interaction is implemented through a link between the nodes of finite element model and the grids of transonic small disturbance model. The particular finite element responses, namely translational displacement vectors (TDV), are utilised for reconstructing the deflected wing surfaces. So in each iteration, the updated surfaces are involved as the parent for regenerating the TSD grids. The criteria of the Euclidean norm is applied for evaluating the convergency of aero-structure interaction. Catia-V5, is fully employed to manage three dimensional geometries for developing the model of wing structures, calculating grids and aerodynamic loads, as well as for reconstructing the updated wing surfaces. Numerous functions and objects of Catia are employed by conducting particular accesses via component object models using Microsoft Visual Basic.Net. A case study is excersized to demonstrate the interaction in transonic speed. The results shown that the scheme is very good in the way performing the interaction in quasi static condition. The utilization of TDV for generating the deflected wing surfaces indicates the capability of high fidelity deformations with respect to the complexity of finite element model.
Źródło:: Journal of KONES; 2013, 20, 2; 409-416
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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