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Refrigeration and air-conditioning technology course: sustainable growth of professional competency Eugenio A. Ermac; Nolasco K. Malabago
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 3, No 2 (2013): Engineering
Publisher : Syiah Kuala University

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This study was conducted to explore a practical discussion on helping the students’ professional competency. More specifically, this study conducted two studies developing a competency analysis profile on refrigeration and air conditioning technology, and examining the essential core competencies for training undergraduate students in Bachelor of Science in Industrial Technology specializing Refrigeration and Air Conditioning Technology at Cebu Technological University. The qualitative and quantitative data were collected through observations, interviews, document analysis, and developing a curriculum job analysis process from six (6) training instructors from Cebu Technological University, two (2) training instructors from Technical Education Skills and Development Authority and three (3) service technicians from wellknownRefrigeration and Air Conditioning Service Centers in Metro Cebu. Moreover, the importance of core competencies as rated by respondents and the mean rating were calculated for each competency. The quality of the results had to be applied for a systematic curriculum and instructional development to effective implementation guidelines. Thus, enhance the competencies in Refrigeration and Air Conditioning Technology

Pharmacologic Aspect of Neuropathic Pain Endang Mutiawati; Imai Indra; Syahrul Syahrul; Mulyadi Mulyadi
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 5, No 2 (2015): Life Sciences
Publisher : Syiah Kuala University

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Neuropathic pain is pain arising from nerve damage to the conductive pathways of pain (ranging from nociceptors to post central gyrus). Neuropathic pain can be caused by 1) Carcinomas, 2) Trap/compressive, 3) Congenital, 4) Immunomediated, 5) Infection, 6) Metabolic disorders, 7) nutritional deficiency, 8) Toxin, 9) Lesion, 10) Vasculitis, 11). Connective tissue disorders. To date, the pathophysiology of neuropathic pain can not be explained thoroughly, this problem leads to the treatment which has not given satisfactory results as expected. There are many types of drugs has been used for the treatment of neuropathic pain, and they are generally aimed to stop the flow of impulses in the nervous system which was activated as a result of ectopic generators in areas experiencing nerve injury. These drugs work in several locations such as: drugs that works on 'sodium channel voltage gate' (i.e Carbamazepine group), drugs that works on 'calcium channel' (i.e Gabapentin and Pregabalin), and also drugs that works on ‘the synapses gap’ (i.e Tricyclic class). Besides drugs that inhibit pain impulses propagation, the treatment of neuropathic pain also include drugs that have the ability of nervous system regeneration such as methylcobalamin group. The rationale of the use of this kind of drugs is that this drug expected to regenerate the damage of the nervous system damage which is lead to decrease the ectopic generator activity, the end result is the reducement of neuropathic pain experienced by patients

Determination of platinum group elements (PGE) in soil and grass using ICP-MS in UKM Engineering Lake RINDI G. HATIKA
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 4, No 1 (2014): Engineering
Publisher : Syiah Kuala University

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Three elements in platinum group elements (PGE) which are platinum (Pt), palladium (Pd) and rhodium (Rh) are widely used in vehicle exhaust as catalyst in changing material and toxic gases such as CO, HC and NOx. However, the release of vehicle exhaust emission has increased the content of platinum group elements in the environment including dust, soil, water and grasses and sediments. The research aimed to determine the PGE content in grass and soil and to determine the concentration of Pt, Pd and Rh metals obtained in samples. The research was done at 4 station at UKM Engineering Lake, Malaysia. Analysis was done using Inductively Coupled Plasma-Mass Spectrometry (ICP-MS). Result of the research showed that Rh metal was present at grass and soil sample. The Rh metal concentration in grass sample is between 1. 770 µg/g to 15.225 µg/g and in soil sample is between 2.347 µg/g to 9.579 µg/g. Pt and Pd were not detected in all samples and all stations. There are 80 other elements detected in the analysis. However, only four elements were taken into consideration which were Cu, Zn, Ni and Pb Since these elements were originated from vehicles activities. Their presence showed that Rh metal detected was from catalyzed changer in vehicles

Soil erosion modeling or a microwatershed Ricson L. Ines; Romeo B. Gavino
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 3, No 1 (2013): Life Sciences
Publisher : Syiah Kuala University

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The objective of this study was to develop a soil erosion model for a microwatershed. The selected watershed area was 2.64 hectares under forest area with plantation crops. Soil erosion factors identified were precipitation, stone cover, soil physical properties, height of vegetation, slope steepness and ground cover. From this mechanism, values of permanent interception, soil cohesion, erosive rainfall intensity, evapotranspiration and infiltration was established. Composition of precipitation, evapotranspiration, infiltration and surface runoff was the water balance basis for the model structure developed. Soil erosion equation (RMMF) model by Morgan was modified. Secondary equation, the kinetic energy of leaf drainage (KE(LD)) was replaced with the kinetic energy equation. Event surface runoff from the original equation of the model was enhanced; it was applied based on the water balance equation (Rs = P – ET – F). Stone cover factor was added to the equation of energy because it has an effect to the raindrop impact. The new model was calibrated and validated by comparing the observed and adjusted soil erosion values for the selected rainfall-runoff event of May to September, 2012. Analysis of data sets used in the calibration of the model yielded calibration equation of Adjusted Dt = 0.456*Dt – 0.878. Data sets during the calibration had correlation coefficient of 90.30%, root mean square error (RMSE) of 27.5 % and coefficient of determination was 81.5%. Calibration equation was included in the model to come up with the final equation that determined total soil erosion rate. In the validation of final model, adjusted detachment rate and the observed value posted 97.9% correlation with root mean square error of 56%. The model could be used as prediction measure in the design and construction of channel structures as well as soil and water conservation practices that may reduce soil erosion.

Fourrier Transform Infrared and Gel Permeation Chromatography Evaluation to Prepared Polyurethane Paint from Polyol Palm Oil Based Teuku Rihayat; . Suryani; Pocut Nurul Alam
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 2, No 2 (2012): Engineering
Publisher : Syiah Kuala University

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New emulsion type paint was prepared by utilizing polyol for the production of polyurethane by reaction with an isocyanate was obtained by the synthesis of palm oil-based oleic acid with glycerol. Dodecylbenzene sulfonic acid (DBSA) was used as catalyst and emulsifier. The various methods for preparing Polyurethane /clay Nano composites, but in this research the author choice by a pre-polymer method and were evaluated by Fourier Transform Infrared (FTIR) spectra to determine micro-domain structures of segmented PU. The molecular weight (MW) of polyol was obtained by using gel permeation chromatography (GPC) and the result was about 950. The micro domain structures of the segmented PU were analysed by FTIR by following the work of Seymour et al. to estimate the degree of phase separation in segmented PU. The formation of hydrogen bonding by –C=O group can be determined by examining the peak position at 1709 cm-1 for hydrogen bonded –C=O and at 1731 cm-1 for free –C=O. The molecular weight (MW) of PU based on palm oil was about 3.266. The performance characteristics of materials indicate to be comparable with the corresponding industrial standard

Adaptation and growth response in some varities of rice under salinity stress Wan Arfiani Barus; . Rosmayati
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 2, No 1 (2012): Life Sciences
Publisher : Syiah Kuala University

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Aim of this research was to get genotif that has the best growth and high adaptability in saline soil. Response of growth and adaptation were tested of 30 genotypes of rice. 30 genotypes respectively were observed and classified by the criteria : sensitive, moderate, tolerant and very tolerant by using a scoring method (salt injury score). Observation of growth and production showed that genotif IR 42 had the best growth and production as compared with other genotif.

Histamine Levels in Repeated Thawing Beef Nurliana Nurliana; Borgo Mauly Nasution; Darmawi Darmawi; Sugito Sugito
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 5, No 2 (2015): Life Sciences
Publisher : Syiah Kuala University

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The aim of this research was to determine the histamine levels in repeated thawing beef. This research were using longisimus dorsi part (sirloin) of beef. Repeated thawing treatments of beef consisted of P1 as control without freezing, P2 as first thawing after one week freezing, P3 as second thawing without freezing two weeks and P4 with freezing three weeks. The slices of beef was storage in freezer at temperature of -20ºC every weeks for three weeks. The thawing process was done by storage in refrigerator at temperature of 6ºC for 270 minutes after being removed from the storage in freezer every weeks for three weeks. PIC (Protease Inhibiting Cocktail) methode were used to extraction of enzyme in beef. Enzyme Link Imunosorbent Assay (ELISA) were used to detected the histamine levels with 450 nm wave length. The quantitative data from parameters were analyzed by descriptive. The results of the study concluded that repeated thawing beef in refrigerator at temperature of 6ºC could decrease the histamine levels.

Isolation and crystallization of patchouly alcohol from patchouly oil Yuliani Aisyah
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 1, No 2 (2011): Engineering
Publisher : Syiah Kuala University

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Patchouly alcohol is the main component in patchouly oil, and its quantity influences to the quality and price of patchouly oil in trade. According to ISO 3757:2002 standard, the patchouly oil have to contain 27-35% of patchouly alcohol and according to SNI 06-2385-2006 standard, they have to contain at least 31%. Cromatography gas is the standard method recomended by ISO 3757/2002 for testing the quality of patchouly oil. This method requires the original compound of pure patchouly alcohol as the reference material. However the authentic compound of pure patchouly alcohol is not yet available in the chemical trade. Therefore, research should be focused on determining a patchouly oil standar as laboratory reference testing in Indonesia. The experiment of isolation patchouly alcohol from patchouly oil was conducted using fractional distillation method. The isolated patchouly alcohol was identified by gas chromatography-mass spectrometry method. The isolation gave 6.23% yield of patchouly alcohol, and the purity of isolated patchouly alcohol was 95.68%.

Isolation of enterobacteriaceae bacteria species from feces of Sumatran Orangutans (Pongo abelii) . Darmawi; Erdiansyah Rahmi; Maryulia Dewi; Joharsyah Hutabarat; Mahdi Abrar; . Fakhrurrazi
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 3, No 1 (2013): Life Sciences
Publisher : Syiah Kuala University

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The porpouse of this research aimed to isolate enterobacteriaceae bacteria from feces of Pongo abelii. The samples of feces were collected from 15 captive orangutans in Orangutan Sumatera Batu Mbelin Sibolangit Qurantine, North Sumatra. Of each sample was cultured in nutrient broth media using sterilecotton swabs or Pasteur pipettes, and incubated at 37°C temperature for 24 hours. Culture was spared on Methylene Blue Agar (Oxoid), examined by Gram staining, and tested by biochemically. The result showed that significantly more common appear Escherichia sp. (93,33%) and fewer Edwardsiella sp. (66,67%) wereisolated from feces samples of P. abelii. Others enterobacteriaceae found in feces of P. Abelii were Shigella sp. (46,67%), Klebsiella sp. (33,33%), Citrobacter sp., and Salmonella sp. (13,33%), respectively

Effect of Process Variables on Cr (IV) Removal from Liquid Waste Using Guava Leaf (Psidium guava) . Mariana; . Hisbullah; Komala Pontas; Ferry Soraya; Purwana Satriyo
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 2, No 2 (2012): Engineering
Publisher : Syiah Kuala University

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The removal of Cr(IV) in aqueous solution by Guava Leaf (Psidium Guajava) as a bio-sorbent was experimentally investigated. The experiment was carried out in a batch stirred reactor at room temperature. The effects of certain parameters, such as concentration of bio-sorbent and contact time, were investigated. The removal increased with contact time and concentration of bio-sorbent. The results showed that the contact time is directly proportional to the sorption capacity and the sorption efficiency. The sorption efficiency of Cr (VI) was highest at 5 grams bio-sorbent, while the sorption capacity of Cr (VI) was highest in bio-sorbent 1 gram under current experimental condition. The optimum removal of Cr (VI) using guava leaves occurred while stirring 30 minutes.

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