Hydrothermal hydrolysis of starch with CO2 and detoxification of the hydrolysates with activated carbon for bio-hydrogen fermentation.

The imminent use of hydrogen as an energy vector establishes the need for sustainable production technologies based on renewable resources. Starch is an abundant renewable resource suitable for bio-hydrogen generation. It was hypothesised that starch hydrolysates from a large (250 mL) hydrothermal reactor could support bioH2 fermentation without inhibition by toxic byproducts.\ud \ud Starch was hydrolysed at high concentrations (40 200 g.L-1) in hot compressed water (HCW) with CO2 at 30 bar in a 250 mL reactor, the largest so far for polysaccharide hydrolysis, at 180 235 °C, 15 min. Hydrolysates were detoxified with activated carbon (AC) and tested in biohydrogen fermentations. The maximum yield of glucose was 548 g.kg starch 1 carbon at 200 °C. 5 hydroxymethyl furfural, the main fermentation inhibitor, was removed by AC to support 70% more hydrogen production than the untreated hydrolysates. The potential utilization of starch hydrolysates from HCW treatment for upscaled fermentations is promising

Friction and wear response of vegetable oils and their blends with mineral engine oil in a reciprocating sliding contact at severe contact conditions

Although many studies investigating the tribological performance of pure vegetable oils have been conducted, a better understanding of vegetable oil tribological performance at extreme conditions is still needed. Similarly, little work has been carried out to study the influence of the vegetable oils on the performance of a lubricant formed from a blend of vegetable oil and conventional mineral engine oil. This work presents the tribological performance of vegetable oils, and their blends with mineral oil, in a high temperature and contact pressure reciprocating contact. Palm and soybean based vegetable oils were mixed with a commercial mineral engine oil at a 1:1 ratio by volume. The conventional mineral oil was also tested to provide a benchmark. The pure palm oil exhibited lower friction than soybean oil, but for wear performance, this was reversed. The friction performance of the palm oil was competitive to that of the mineral engine oil. The mineral engine oil was far superior in wear resistance over both vegetable oils. When blended with mineral engine oil both vegetable oils demonstrated a reduction in coefficient of friction when compared to their pure oil states. An improvement in wear performance was observed for both a blend of palm oil and mineral engine oil (25% improvement) and that of soybean and mineral engine oil (27% improvement). This work shows that for palm oil and soybean oil, the performance of a blended oil is influenced by its vegetable oil component and that tribological characteristics of vegetable oils are dominant. That said, the significant limitation of these vegetable oils is their ability to provide a satisfactory level of wear resistance. It is suggested that any future work in this area should have a greater emphasis on the enhancement of wear resistance

Modul Psikospiritual-Mangsa Banjir (MPS-MB) serta-merta dan separuh penggal (MID-TERM) pasca banjir

Penerokaan mengenai aspek psikologi mangsa banjir dan keperluan pembentukan modul psikologi dilihat sebagai keperluan penting selepas berlaku bencana banjir besar. Kajian ini dijalankan untuk membentuk Modul PsikoSpiritual-Mangsa Banjir (MPS-MB) yang bakal digunapakai oleh mangsa banjir di negeri Sabah dan Sarawak serta di Semenanjung Malaysia. Seramai 130 mangsa banjir di Gua Musang dan Manik Urai, Kelantan dan Kuching, Sarawak dijadikan sebagai responden kajian. Pemilihan berdasarkan senarai mangsa banjir yang berdaftar di pusat pemindahan banjir. Kajian ini menggunakan reka bentuk exploratory sequential design iaitu dimulakan dengan Fasa 1: Kajian kualitatif, Fasa Interim: Proses Pembinaan Modul dan Fasa 2: Kajian kuantitatif iaitu menguji kesahan muka dan kesahan kandungan oleh pakar dalam bidang psikologi bencana. Di samping itu, kumpulan pengkaji turut menguji trauma mangsa banjir dengan menggunakan soal selidik Peritraumatic Dissociative Experiences Questionnaire (PDEQ) dan Peritraumatic Distress Inventory (PDI). Hasil kajian kualitatif menjadi asas dan panduan kepada pembinaan MPS-MB yang merangkumi lima (5) unit dan 17 aktiviti. Kesahan muka dan kesahan kandungan MPS-MB seterusnya disemak dan dinilai oleh pakar dalam bidang psikologi. Pembentukan MPS-MB mampu menjana ilmu pengetahuan mengenai pengalaman sebenar mangsa banjir berkaitan aspek psikologi dan spiritual. Hasil kajian dan pembentukan modul ini juga membolehkan masyarakat khususnya mangsa banjir mengetahui persediaan masa hadapan agar dapat mengurus dan mengurangkan impak psikologi yang negatif ke atas mangsa bencana banjir

Dampak Mengkonsumsi Minuman Keras Arak pada Remaja di Dusun Aur Sampuk

The objective of this research was to know the effect of dringking the alcohol of the teenagers in Aur Sampuk of Sengah Temila District in Landak Regency. In this reserch the researcher used the qualitative descriptive method. The techniques of data collection were observation, interview and the study of documentation, whereas the tools of data collection were the directive of observation, directive of interview, the notes and the files. The result of this research showed that the healthy of the teenagers as the effects of dringking the alcohol was showed by their thin body, concave and red eyes, black lips, and walking with tottering steps, even they vomited and could not wake up. Theimpact of drinking the alcohol for their spirit were they talked too much about strange and pornographic things, they were easier to be offended and angry, their moods were changeable, they always smoke, they never focused and sometimes they hold their heads. Dringking alcohol also gave the bad impacts to the safety of society, such as making the noise till the midnight, playing the loud music, screaming, singing with loud voice, stealing and caused the contention

Peran Guru dalam Mengembangkan Sosialitas Siswa Kelas XI IPS 2 Sman 1 Kuala Mandor B

The aims of this research is to know how is the role of teacher develop students sociality on grade XI IPS 2 at SMAN 1 Kuala Mandor B. The approach of this research is used the qualitative approach with descriptive method. The technique of data collecting in this research the researcher uses interview, observation and documentation study. The informant of this research consist with 5 teachers and 5 students in grade XI IPS 2. The results of this research indicate that teachers have a role to develop sociality students consisting of the teacher\u27s role in guiding students mutual respect among friends with the teacher scolded the students who will be do bully other friends. The role of the teacher in directing students to respect their peers to lead students in a cooperative group work and role of the teacher in directing student\u27s tolerance among friends by directing students to help friends affected

Experimental pathogenicity of shrimp, Penaeus vannamei exposed to monodon baculovirus (MBV)

The objective of our study was to explain the histopathological changes of monodon baculovirus (MBV) in hepatopancreas and midgut tissues of the cultured Penaeus vannamei. Five-hundred and forty juvenile of P. vannamei with average size of 7.99±0.54 g and 3600 post larvae 10-15 were distributed to 18 glass aquariums (50×50×60cm) with 100L well aerated water per each aquarium as water borne MBV (group A) and food borne MBV (Group B) and one control group (C), in triplicates. Also, 3600 post larvae were dedicated for water borne exposure (D) based on one time immersion exposure in 24 h without water exchange and the untreated group was studied as control in triplicates. The specific pathological sign of MBV was observed as a multiple intranuclear eosinophilic occlusion bodies (OBs) in hepatopancreas and midgut tissues. Our result indicates that the severity of the MBV infection is more considerable in post larvae than juvenile stage and confirms that MBV can be an invasive pathogen for shrimp culture industry in Iran