BIODEGRADATION OF CHLOROBENZENES UNDER AEROBIC AND ANAEROBIC CONDITIONS

Bioremediation is a process that leverages the unique metabolisms of microorganisms in order to treat harmful contaminants that have entered the environment. This project explores the use of both aerobic and anaerobic biodegradation processes for the treatment of a model class of chlorinated organic contaminants, chlorobenzenes. The ultimate project goal is to apply both degradation processes for a passive in situ reactive barrier that provides an efficient and economical treatment of chlorobenzenes discharged in subsurface water. In this thesis, the objective is to explore the potential for the aerobic and anaerobic biodegradation that are to be applied sequentially in a reactive barrier. The potential for biodegradation of chlorobenzenes under anaerobic conditions was assessed in a biofilm column study. Several batch experiments were designed and conducted to study the factors influencing activities of aerobic and anaerobic chlorobenzene-degrading enrichment cultures and the potential of these cultures for biodegrading chlorobenzenes. In collaboration with the USGS, an extensive collection of field samples was analyzed using ion chromatography to quantify anions in the pore water at the chlorobenzene-contaminated Superfund site, Standard Chlorine of Delaware. At this site, several pilot reactive barriers were constructed to assess the remediation potential of this treatment technology. The biogeochemical data obtained from anion analysis was coupled with chlorobenzene measurements in order to estimate the extent of degradation occurring in the barriers. Additionally, an extensive set of analytical and experimental methods were developed for the operation and measurement of simulated degradation experiments. These are described in detail in the methods and materials of this thesis

A 128-point Multi-Path SC FFT Architecture

This paper presents a new radix-2^k multi-path FFT architecture, named MSC FFT, which is based on a single-path radix-2 serial commutator (SC) FFT architecture. The proposed multi-path architecture has a very high hardware utilization that results in a small chip area, while providing high throughput. In addition, the adoption of radix-2^k FFT algorithms allows for simplifying the rotators even further. It is achieved by optimizing the structure of the processing element (PE). The implemented architecture is a 128-point 4-parallel multi-path SC FFT using 90 nm process. Its area and power consumption at 250 MHz are only 0.167 mm2 and 14.81 mW, respectively. Compared with existing works, the proposed design reduces significantly the chip rea and the power consumption, while providing high throughput.Comment: Conference paper, ISCAS 2020, 5 page

New D- A- A- - Configured Small Molecule Donors Employing Conjugation to Red- shift the Absorption for Photovoltaics

Four new donor- acceptor- acceptor- (D- A- A- )- configured donors, CPNT, DCPNT, CPNBT, and DCPNBT equipped with naphtho[1,2- c:5,6- c- ²]bis([1,2,5]- thiadiazole) (NT) or naphtho[2,3- c][1,2,5]thiadiazole (NBT) as the central acceptor (A) unit bridging triarylamine donor (D) and cyano or dicyanovinylene acceptor (A- ), were synthesized and characterized. All molecules exhibit bathochromic absorption shifts as compared to those of the benzothiadiazole (BT)- based analogues owing to improved electron- withdrawing and quinoidal character of NT and NBT cores that lead to stronger intramolecular charge transfer. Favorable energy level alignments with C70, together with the good thermal stability and the antiparallel dimeric packing render CPNT and DCPNT suitable donors for vacuum- processed organic photovoltaics (OPV)s. OPVs based on DCPNT- :- C70 active layers displayed the best power conversion efficiency (PCE)=8.3%, along with an open circuit voltage of 0.92- V, a short circuit current of 14.5- mA- cm- 2 and a fill factor of 62% under 1 sun intensity, simulated AM1.5G illumination. Importantly, continuous light- soaking with AM 1.5G illumination has verified the durability of the devices based on CPNT:C70 and DCPNT- :- C70 as the active blends. The devices were examined for their feasibility of indoor light harvesting under 500 lux illumination by a TLD- 840 fluorescent lamp, giving PCE=12.8% and 12.6%, respectively. These results indicate that the NT- based D- A- A- - type donors CPNT and DCPNT are potential candidates for high- stability vacuum- processed OPVs suitable for indoor energy harvesting.New donor- acceptor- acceptor- (D- A- A- )- configured small molecule donors with extended Ï - conjugation for red- shifting the absorption were characterized. The OPV comprising the donor DCPNT bearing naphtho[1,2- c:5,6- c- ²]bis([1,2,5]- thiadiazole) (NT) as A, cyano as A- , and acceptor C70 displayed the power conversion efficiency of 8.3% under AM 1.5G and 12.8% under 500 lux of TLD- 840 lamp, indicating the potential for indoor photovoltaics application.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/156487/3/asia202000635.pdfhttp://deepblue.lib.umich.edu/bitstream/2027.42/156487/2/asia202000635-sup-0001-misc_information.pdfhttp://deepblue.lib.umich.edu/bitstream/2027.42/156487/1/asia202000635_am.pd

Spin-glass ground state in a triangular-lattice compound YbZnGaO4_4

We report on comprehensive results identifying the ground state of a triangular-lattice structured YbZnGaO$_4$ to be spin glass, including no long-range magnetic order, prominent broad excitation continua, and absence of magnetic thermal conductivity. More crucially, from the ultralow-temperature a.c. susceptibility measurements, we unambiguously observe frequency-dependent peaks around 0.1 K, indicating the spin-glass ground state. We suggest this conclusion to hold also for its sister compound YbMgGaO$_4$, which is confirmed by the observation of spin freezing at low temperatures. We consider disorder and frustration to be the main driving force for the spin-glass phase.Comment: Version as accepted to PR

eLingua : Issue 2 : August 2015 / Academy of Language Studies

1. Hari Raya ‘Potluck’ Gathering 2015 2. Blended Learning & e-content (BLeC) UiTM Pulau Pinang 3. PhD Research Methodology (North Zone) 2015: PhD on Time 4. Our Victorious Team at KIK UiTMPP 2015 5. OBE Workshop 6. Editing Workshop for English Lecturers 7. APB MUET Seminar 2015 8. UiTM Kedah Colloquium 2015 9. eAttendance Workshop 10. A Day to Remembers UiTM PENANG ENGLISH LANGUAGE DAY 2015 11. Activity: Whose line is it anyway? (Movie Dubbing) 12. Activity: Lights, Camera, Action (Role-play) 13. ‘Program Khidmat Masyarakat APB UiTMPP 2015’ 14. URBAN French in Penang 15. Invention, Innovation & Design Exposition (iidex) 2015 16. Is There A Connection Altogether? 17. Menjadi Seorang Pakar Dalam Pengurusan Wang 18. From Bukit Mertajam to Padang Besar with Lov

TNF-α Mediates Eosinophil Cationic Protein-induced Apoptosis in BEAS-2B Cells

<p>Abstract</p> <p>Background</p> <p>Eosinophilic granulocytes are important for the human immune system. Many cationic proteins with cytotoxic activities, such as eosinophil cationic protein (ECP) and eosinophil-derived neurotoxin (EDN), are released from activated eosinophils. ECP, with low RNase activity, is widely used as a biomarker for asthma. ECP inhibits cell viability and induces apoptosis to cells. However, the specific pathway underlying the mechanisms of ECP-induced cytotoxicity remains unclear. This study investigated ECP-induced apoptosis in bronchial epithelial BEAS-2B cells and elucidated the specific pathway during apoptosis.</p> <p>Results</p> <p>To address the mechanisms involved in ECP-induced apoptosis in human BEAS-2B cells, investigation was carried out using chromatin condensation, cleavage of poly (ADP-ribose) polymerase (PARP), sub-G1 distribution in cell cycle, annexin V labeling, and general or specific caspase inhibitors. Caspase-8-dependent apoptosis was demonstrated by cleavage of caspase-8 after recombinant ECP treatment, accompanied with elevated level of tumor necrosis factor alpha (TNF-α). Moreover, ECP-induced apoptosis was effectively inhibited in the presence of neutralizing anti-TNF-α antibody.</p> <p>Conclusion</p> <p>In conclusion, our results have demonstrated that ECP increased TNF-α production in BEAS-2B cells and triggered apoptosis by caspase-8 activation through mitochondria-independent pathway.</p

eLingua : Issue 1 : June 2018 / Academy of Language Studies

1. “Jelajah Akademik” (Academic Tour) of APB UiTM Shah Alam to APB UiTM Penang 2. Internal Audit 2018 3. Congratulations, DM52 Promotion Recipients! 4. APB Language Editors for Faculty of Civil Engineering Vetting of Diploma Test Papers 5. Kursus Pra Persaraan 6. A meet-up with the rector and the top management 7. International Conference on Social Sciences, Education and Hu-manities (SOSEHUM) 2018 8. ENGLISH LANGUAGE CLUB PROGRAMMES 2018 9. Penglibatan staf APB dalani Misi Akademik 2018 10. Lemang dan Rendang di UiTM CPP! 11. A report on the Family Day Bowling Event 2018 12. APB Sports Women in KARISTA 2018 13. APB UiTMCPP Family Dav @ The Jerai Ilill Resort (11th-12th August 2018) 14. Q-Brainsters in the KIK Mini Convention UiTMCPP 2018 15. Language Carnival 2018 16. Language Colloquium 2017 17. Sebuah Kamus seribu makna—Siri 1 (SK Bandar Baru Perda, 1 Ogos 2018) 18. Projck Nur Ramadhan .APB 19. Barang-Barang Keperluan Asas di Free Market 2018 20.‘Getting to know you more’ 21. From the Third Languages 22. What Are You Thinking? 23. HIJAU 24. Rava Dulu vs Raya Sekaran

Seminar Report From the 2014 Taiwan Society of Inflammatory Bowel Disease (TSIBD) Spring Forum (May 24th, 2014): Crohn's Disease Versus Intestinal Tuberculosis Infection

Since Taiwan is an endemic area for tuberculosis (TB), differential diagnosis between the intestinal TB and Crohn's disease is an important issue. The steering committee of Taiwan Society of Inflammatory Bowel Disease (TSIBD) has arranged a seminar accordingly on May 24th, 2014 and the different point of views by gastroenterologist, radiologist, pathologist and infectious disease specialist were suggested to help the proper diagnosis and management of these two diseases