Category Archives: Science & Technologies

Surgical breakthrough helps one-year-old gift sight to 60-year-old man

Chennai :

When UK-based surgeon Harminder Dua discovered a new layer in the cornea in September this year, it was considered an achievement. But the real buzz was when Chennai doctors took the breakthrough to a new level and performed a procedure in which a one-year-old girl gave sight to 64-year-old M Shanmugam, a retired air conditioner mechanic from Avadi.

The exciting procedure, which according to Dr Amar Agarwal of Agarwal Eye Hospital that performed the procedure is the first of its kind in the world, is expected to “revolutionize” the way eye transplants are done.

In the new technique, Pre-Descemet Endothelial Keratoplasty (PDEK), the donor can be of any age. In the earlier procedures, the donor had to be above 50 years of age.

Conventionally, doctors were using a whole cornea or parts of the five layers of the cornea to perform correction surgeries. A couple of months ago, Dr Harminder Dua discovered a sixth layer between the stroma and the descemet membrane which is now named Dua’s layer. In the PDEK technique, doctors take the innermost two layers of the cornea, along with Dua’s layer and graft it in the patient’s eye. “The biggest advantage of this technique is that age is not a bar to be a donor. Moreover, as Dua’s layer is slightly more fibrous, it becomes easier to manipulate the tissue,” said Dr Amar Agarwal.

In PDEK, the donor’s cornea is kept upside down and injected an air bubble to separate the layers. “After procuring the tissue, we make a minute incision in the patient’s eye and fix it. Once the graft is unrolled, the transplant is complete and vision is restored,” said the doctor. The entire procedure can be wrapped up in 25 minutes after which the patient is advised to rest and can leave the following day. “Another major advantage of PDEK is that there is negligible graft rejection and no sutures are involved as only a small tissue is used for the transplant. Preliminary studies show that the graft thickness is about 28 to 30 microns and it behaves well,” said Dr Agarwal. “We have performed 16 such procedures since September but this surgery gains significance as the donor is a one-year-old,” added the doctor.

source: http://www.articles.timesofindia.indiatimes.com / The Times of India / Home> City> Chennai> Cornea / TNN / November 10th, 2013

Jaya inaugurates Pennycuick memorial

jayallaithaaCF16nov2013

Theni (TN):

Tamil Nadu Chief Minister J Jayalalithaa on Tuesday inaugurated a memorial for Colonel John Pennycuick, the British engineer who built the century-old Mullaperiyar Dam to solve the drought situation in the Vaigai delta region in the 19th century.

The memorial has a bronze statue of Pennycuick, and has been constructed amid the scenic Western Ghats at Lower Camp here at a cost of Rs 1.25 crore. The dam is said to have been completed in 1895.

Tamil Nadu and Kerala are locked in a bitter row over the 118-year-old dam, with the latter wanting to replace it with a new one citing safety reasons while Tamil Nadu has held that the dam is strong. A case is on before Supreme Court.

During the simmering row with Kerala over the safety of the dam last year, Jayalalithaa had announced constructing the memorial for the Britisher over 2500 sq.ft.

She had then said people had placed a demand for constructing a memorial for Pennycuick to show their gratitude since the dam had been functioning well.

Jayalalithaa expressed confidence of a favourable verdict from the apex court in the wake of its appointed empowered committee vouching for the safety of the dam.

“In its report (the committee) has clearly said that the dam is safe and the storage level could be increased to 142 ft (from 136 ft) and then on upto 152 ft after taking up necessary works. I believe Supreme Court will rule in favour of Tamil Nadu based on this report,” she said in her address.

The Chief Minister noted that Pennycuick had sold his property back in England for completion of the project amid lot of difficulties including stoppage of funds from then British administration and natural calamities.

She also announced naming the upcoming Bus Stand at Theni after the British colonel.

Jayalalithaa refuted DMK chief M Karunanidhi’s charge that her government had not taken up maintenance of the 133 ft tall Thirvuvalluvar statue at Kanyakumari, saying chemical coating was given in 2004 and 2008.

The foundation stone for the statue of the Tamil saint-poet was laid by former Prime Minister Morarji Desai in the presence of then chief minister M G Ramachandran in 1979 and even during her rule in 1991-96 Rs 1.28 crore were released for various works connected with it. Karunanidhi cannot claim
entire credit for erecting the statue, Jayalalithaa said.

She also announced constructing a memorial for legendary Tamil king Karikal Chola for building the 2000 year-old ‘Kallanai’ (dam) over Kollidam river,which is still strong. She described the dam as an “engineering marvel.”

source: http://www.deccanchronicle.com / Deccan Chronicle / Home> News> Politics / DC / January 15th, 2013

Bronze statue of Chola king to be installed in Thanjavur

Karikala Cholan statue.
Karikala Cholan statue.

Chennai:

An eight-foot-high bronze statue of Karikala Cholan, seated on an elephant, which was made at a studio here, is all set to be in­sta­lled in Thanjavur district.

Following chief minister J. Jayalalithaa’s announcement, the government took up the task of making the statue to perpetuate the memory of the king who built the Kallanai dam for irrigation in the Cauvery delta region.

Jayalalithaa had announced the statue for the king while inaugurating in January this year the memorial of John Pennycuick who built the Mullaiperiyar dam.

“The 2,000-year old Kallanai dam which stands stronger than many other dams in the state was built by the Tamil king, and hence, his statue is being readied to stand majestically at his memorial near the dam,” said Kishore. J. Nagappa, who sculpted the statue.

“It took us around three months to finish the statue,” Nagappa said.

“The statue has been so designed that it can stand the test of time and remain a subject to be talked about. Hence, it is meticulously done,” he added.

The memorial will be constructed at a cost of Rs 2.10 crore along the banks of the Cauvery on an area of 4,090 sq ft.

source: http://www.deccanchronicle.com / Deccan Chronicle / Home> News> Current Affairs / DC / November 10th, 2013

Medicine man

An early photograph of Dr. A.Mathuram with his wife Jane and children. / Photo by Special Arrangement / The Hindu
An early photograph of Dr. A.Mathuram with his wife Jane and children. / Photo by Special Arrangement / The Hindu

The story of Dr. Ayyathurai Mathuram, one of Tiruchi’s most notable medical practitioners

On the Puthur junction leading on to Pattabhiraman Road in Tiruchi stands a gilded statue, impervious to the chaotic traffic below. The likeness is that of Dr. Ayyathurai Mathuram, one of the city’s notable medical practitioners, and was inaugurated by the then Chief Minister of Madras, K.Kamaraj, in 1956.

Behind the statue stretches out a compound of residences and commercial buildings, broadly known by the name of the first structure there — Guru Medical Hall. And with it, the story of the Mathuram family that is woven into the city’s reputation as a regional healthcare hub, with generations of the clan practising both allopathic and Ayurvedic medicine here until today.

Walking us through the rich legacy is Dr. Bapu Isaac Mathuram, one of Dr. Ayyathurai’s grandsons, who stays in what is known as the ‘Centenary Building’, built in 1977 to mark the 100th birth anniversary of Dr. A.Mathuram.

A professor of biochemistry at the CSI College of Dental Sciences and Research, Madurai, Dr Bapu also finds himself to be a keeper of memories, particularly those related to his illustrious ancestors.

His residence is also unique for another reason — its two upper floors serve as the manufacturing unit of the popular Ayurvedic preparations patented by Dr. A. Mathuram — Guru Thailam (ointment) and Guru Pal Podi (toothpowder).

Family of physicians

As we sit listening to Dr. Bapu recounting the chronology of the Mathuram physicians down the ages in a room lined with a mix of antique and modern furniture and knick-knacks, the broad outlines of a different era begin to take shape.

“My great-grandfather Dr. Samuel Mathuram is the one who decreed ‘Mathuram’ (honey/nectar in Sanskrit) should be the family name, though we don’t know exactly why. He was a Christian missionary doctor who served in many places throughout southern India for 46 years,” says Dr. Bapu.

Dr. Samuel was also the recipient of the formulae of his grandfather Nallamuthu Visuvasam’s natural remedies. Visuvasam was a well-respected physician from Tirunelveli who had formulated his medicines based on his interactions with Hindu ascetics in the early 19th century.

Inspiration

Dr Samuel’s son Ayyathurai was born in 1877 in Irungalur near Tiruchi. After the death of his first wife (after the birth of another son), Dr. Samuel moved to Nazareth near Tuticorin.

Ayyathurai was a precocious child, according to family accounts, and says Dr. Bapu, “even though he had already done an LMP (Licentiate Medical Practitioner) degree, considered a high qualification at that time, he decided to switch over to proper medical studies after getting inspired by the words on the page of a pulpit Bible while praying in church, which he felt urged him to go and minister the sick and serve the poor.”

He completed his studies at the Prince of Wales Medical School, Thanjavur, in 1900 and served in the government for five years before deciding to strike out on his own. Starting his practice in Virudhunagar, he moved to Viswanaikanpettai (near modern-day Tennur), in Tiruchi, choosing two adjacent houses to function as his clinic and residence.

Medical mission

Unlike other doctors of the period who were rejecting native cures in favour of Western medicine, Dr. A. Mathuram promoted Ayurvedic therapies. The most common ailments at the time were anaemia and malaria, cures for which people thronged the doctor’s clinic.

“Dr. A. Mathuram wanted to give people medicines that were reasonably priced, and used natural ingredients,” says Dr. Bapu. “My grandmother Jane used to grind them in the right proportion,” he adds.

“Inspired by a song with the words ‘Guru Marunthu, Maru Marunthu’ playing next door, Dr. A. Mathuram decided to name his company Guru Medicine,” he adds, with Guru indicative of Jesus Christ, whose image is also part of the product logo.

By the early 1900s, Dr. A.Mathuram’s formulations were selling well in Burma, Malaya and Sri Lanka. Among the more famous of these were Guru Santhana Sornam (to treat female infertility), Guru Ague Mixture (malaria), Guru Soga Sanjeevni (anaemia), Guru Vallara Legyam (skin disease), Malabar Koonthal Thailam (for hair growth) and Manorama Hair Oil (anti-dandruff).

The British honours of ‘Rao Bahadur’ and ‘Rao Sahib’ were conferred on Dr. A. Mathuram as his medical career flourished.

Legacy

Always of a spiritual bent of mind, Dr. Ayyathurai gifted away large tracts of his land holdings in Tiruchi for public use. Some of the family’s properties such as the Ettupattai Bungalow (octagonal in shape) and Guru Medical Hall, have become popular place markers in the Puthur locality.

Seven children were born to the Mathurams, four sons and three daughters, most of who went on to serve as medical practitioners.

“My grandfather had a penchant for naming his children after famous world personalities,” reveals Dr. Bapu with a smile when he lists the cosmopolitan names of Dr. A. Mathuram’s sons.

The eldest, born in 1904, was Dr. Edward Paul, who joined his father in the Guru Medicine enterprise in 1930 after completing his medical studies. Later on, he was also active in politics, serving as Member of Legislative Assembly and Member of Parliament.

The second son, Dr. Naoroji Mathuram also joined the family firm in 1935. The third, Mr. George Rothschild, served in the army and upon retirement, joined the judicial service and went on to become District Judge.

Dr. Bannerji Mathuram (Dr. Bapu’s father), completed his medical studies in Madras Medical College and joined the government service. He retired as District Medical Officer (DMO) after serving in Cuddalore (formerly South Arcot) and Salem in the late 1960s.

Subsequent generations have shown a similar affinity for medicine, with Dr. Samuel Ayyathurai, Dr. Bapu, Dr. Ann Duraisami and Dr. Joseph Mathuram all distinguishing themselves in their chosen field, followed by younger family members today.

Heritage home

Among the vestiges of Dr. A. Mathuram’s estate is a 10,000 square feet bungalow in the Guru Medical Hall compound that retains some of the original furnishings, including four sturdy Burmese teak pillars that support the central hall, and ceramic tiles embedded into the walls, made of local red soil. Built in the 1920s, the high-ceilinged bungalow served as a district courthouse for a while, and also had an emergency underground bunker that has since been closed. “My grandfather also maintained a zoo here, the only one in Tiruchi,” Dr.Bapu says with some pride.

The much-storied life of the medical pioneer came to an end in 1944.

At the bungalow, as Dr. Bapu’s wife Joy coaxes a tune out of the Steinbeck piano that originally belonged to Dr. A. Mathuram, a small gathering of family members breaks into a hymn of thanksgiving. It adds a sweet note to round off the story of the Mathurams.

source: http://www.thehindu.com / The Hindu / Home> Features> Friday Review> History & Culture / by Nahla Nainar / Tiruchi – November 08th, 2013

Solarsis turns IIT Madras rooftop solar and cool

Hyderabad :

In one of its kind research and utility initiative by Hyderabad based Solarsis has installed a unique rooftop Solar PV System on the rooftop of the IIT Madras.

The solar PV system is a smartly designed project with various technologies in modules and inverters. The solar plant is installed on top of the 50 years old Electrical Sciences Block at IIT-Madras which aims to build 1MW solar on top their existing buildings.

Venkat Rajaraman, CEO, Solarsis said the structures is unique as they are non-penetrating type, elevated with a minimum clearance of 8 feet above the roof, designed to withstand high wind zone of the Chennai coastal region.

The plant also brings high degree of reliability and protection to enable to smooth interaction with the grid.

“IIT always being an early advocate of promising technologies like solar and we are doing our best to contribute to some key challenges in solar adaptability through a smart grid controller,” says Dr. Ashok Jhunjhunwala, professor in the Electrical Engineering Department. “We plan to test Smart Controller for solar, which is currently being designed by IITM, with the rooftop solar plant. The elevated structures ensure that we continue to use the roof as before for our regular use.”

The IIT Madras Solarsis rooftop solar plant is a mix of Mono-crystalline, Poly-crystalline, High efficiency Poly-crystalline (with >19 percent module efficiency) and CIGS thin-film modules in which both string and central inverters of various capacities are used. The 90KW solar plant will generate 1.5 lakh units per annum and helps offset 90 tons of carbon dioxide.

source: http://www.ciol.com / CIOL / Home> ESDM / by CIOL Bureau / Wednesday – November 06th, 2013

Former President Kalam to grace Motilal Nehru National Institute of Technology’s convocation

Allahabad :

Motilal Nehru National Institute of Technology, Allahabad (MNNIT-Allahabad), is poised to hold its 10th Annual Convocation-2013 on Thursday at the Rajiv Gandhi MP Hall Complex. The occasion will be graced by former President APJ Abdul Kalam as the chief guest while Prof VK Saraswat, chairman, Board of Governors, would preside over the function.

Speaking to newspersons on Wednesday, director, MNNIT, Prof P Chakravorty, said that during the convocation, 693 BTech, 77 MBA, 72 MCA, 9 MSc, 6 MSW, 404 MTech and 34 PhD students will be awarded degrees. For academic session 2012-13, 23 gold medals will be awarded to postgraduate students and nine to the undergraduate students.

Further, 18 sponsored gold medals are to be awarded across various academic programmes. This is in addition to the medals to be awarded to the toppers of the first, second, third and fourth years of undergraduate programs.

The coveted and prestigious Institute Gold Medal will be awarded to Shobit Srivastava of BTech (Computer Science & Engineering) for standing first amongst students of all branches of the Institute in the Final Year Examination of 2013. He will also receive a gold medal for standing First in BTech (Computer Science & Engineering) Final Year Examination 2013.

Archan Mudwel of Mechanical Engineering will be awarded the gold medal for standing first at BTech third year examination 2013, while Tanu Agrawal and Priyanshu Srivastava, both of Computer Science & Engineering, will be awarded gold medals for standing first in the second and first year examination 2013, respectively.

He said that the institute has continued to take large strides in its mission of academic excellence. In 2012, 66 new faculty members were inducted in various departments. This has taken the total faculty strength to 199, with 50 professors, 36 associate professors and 113 assistant professors.

During academic session 2013-2014, 1,485 students were admitted for various programs of BTech, MBA, MCA, MSc, MSW, MTech and Ph.D, out of which 92 students are from other countries.

In a new initiative, the institute has organized 22 Short Term Training Programs, Faculty Development Programs and Workshops during 2012-2013. Under the TEQIP II program, the Institute has been sanctioned an amount of Rs 12.5 crores towards implementation of several schemes such as innovative research, curriculum development, educational tours, training programs, networking, procurement of equipments, purchase of books, international visits and laboratory upgradation.

The Institute has maintained its excellent record of placements up to 85% during the session with ongoing placements of post graduate students also.

In terms of providing technical assistance to industries, government organizations, the institute has offered more than 290 testing and consultancy activities during the financial year 2012-2013. Altogether 40 research projects, with total sanctioned amount exceeding Rs 10.91 crores have also been sanctioned from various funding agencies, notably DRDO, DAE, ICSSR, DST, CSIR, UGC, DBT and UPPCB.

The Institute is looking at further initiatives towards renewable energy, rainwater harvesting, reusage and recycling of waste water, disaster management and energy conservation as its focus in coming years, he added.

source: http://www.articles.timesofindia.indiatimes.com / The Times of India / Home> City> Allahabad> Mnnit / TNN / October 31st, 2013

Solar photovoltaic plant for Rs 50,000

Picture for representational purposes only.
Picture for representational purposes only.

Chennai: 

Fed up with power cuts?  There could be a way out as it may be possible to install a solar photovoltaic plant of one kilowatt capacity on your  rooftop for as little as Rs 50,000 under the new guidelines iss­ued by the energy de­partment on October 18.

Coming a year after the  government anno­un­ced its solar energy policy, the guidelines provide for a subsidy of Rs 20,000 for consumers looking to install a grid connected battery- less solar system on their rooftops.

While a one kW solar system without battery costs Rs 1 lakh, the consumer will have  to invest only Rs 50,000 and the rest will be borne by the state and Union governments. His power troubles too could be over as a solar system of one kW capacity can generate approximately 1,600 units a year.

“If the  bi-monthly electricity consumption of a consumer is more than 500 units then the total annual saving is likely to be Rs 9,200 which is higher than returns from conventional investment,” said the department in its order.

In the first year, the subsidy will  be provided to 5000 solar systems at a cost of Rs. 10 crore and the next year to 10,000 systems. With the Tamil Nadu Ele­ct­r­i­city Develop­ment Agen­cy (TEDA) acting as a nodal agency, consumers can either apply online through the TEDA website or  manually.

If applying online, a signed printout will have to be submitted to the TEDA office in Chennai within three months. Domestic consumers, whose existing electricity connection is in the tariff class LT-1A with Tangedco, will be eligble and will be selected on a first come first serve basis.

They will, however, be expected to buy the solar plants from suppliers listed by TEDA. In case of apartments, flat owners can submit applications either individually or collectively.

source: http://www.deccanchronicle.com / Deccan Chronicle / Home> News> Current Affairs  / October 25th, 2013

A push for Tamil resources online

There are few free online resources for users in Tamil. The biggest is Tamil Wikipedia, and its volunteers want to make more knowledge free and accessible to all./ File Photo / The Hindu
There are few free online resources for users in Tamil. The biggest is Tamil Wikipedia, and its volunteers want to make more knowledge free and accessible to all./ File Photo / The Hindu

Tamil Wikipedia volunteers offer to help State’s top universities digitise scholarly works

A group of volunteers who contribute regularly to the free online Tamil Wikipedia are lobbying with the State’s top universities to digitise volumes of Tamil encyclopaedia to make accessible valuable content under open knowledge networks.

“There are various Tamil development agencies and universities that get funded to produce scholarly works in encyclopaedias,” says A. Ravishankar, an active volunteer of Chennai’s network of contributors to Tamil Wikipedia.

“These were initiatives started in the 1960s. So mostly they don’t have digital versions and are not accessible unless you buy the book. There are also many works that are out of print. We are looking to digitise these under open knowledge networks,” he says.

Unlike in Western languages, there are few free online resources for users in Tamil. The biggest free resource is the online encyclopaedia Tamil Wikipedia that recently celebrated its 10 anniversary in the city. It has over 55,000 articles written and edited by over 900 contributors, in an age group ranging from 11 to 77 years.

The transferring of such scholarly works online, under licences such as ‘creative commons’ or other ‘copyleft’ (opposite of copyright) agreements have already started around the world and in India. Recently, the University of Goa released its encyclopaedia in Konkani under the creative commons licence that allows for everyone to share information with proper crediting.

In 2008, Malayalam encyclopaedia ‘Sarvavijnjakosam’ was released under GFDL (GNU Free Documentation Licence) on the website mal.sarva.gov.in.

The task of digitising Tamil encyclopaedias would be labour-intensive even more than cost-intensive, and is an area where the Tamil Wikipedia network can pitch in, volunteers say. “There are no good OCR (optical character readers) for Tamil. So the work will have to be manual, and each of the articles will have to be physically typed. If we take up the work, we can save the universities a lot of money and also open up vast reams of knowledge for the common good,” Ravishankar adds.

The Tamil Wikipedia network has asked its volunteers to spread the message at all possible venues to free up knowledge. “You cannot lock up knowledge in books any more,” Ravishankar says. “It is time to free it for the world to read.”

source: http://www.thehindu.com / The Hindu / Home> News> Cities> Chennai / by Karthik Subramanian / Chennai – November 04th, 2013

Exporters’ rush to secure space in Spices Park

A view of Spices Park at Muthupatti, near Sivaganga. / Photo: L. Balachandar / The Hindu
A view of Spices Park at Muthupatti, near Sivaganga. / Photo: L. Balachandar / The Hindu

The park has come up on a sprawling 75.73 acres near Sivaganga

Exporters of spices in southern districts vie with one another to get a coveted space in the maiden Spices Park at Muthupatti near here.

When Union Finance Minister P Chidambaram laid the foundation stone for the park in the nondescript Muthupatti on the outskirts of Sivaganga in August 2008, not many exporters were aware of the facility on the anvil. And when he inaugurated the park on October 6 exporters started making a beeline to set up their units.

“Soon after the inauguration there was overwhelming response from the exporters and 25 units were booked in no time. There were more than 25 applications for the remaining 12 slots and they will be allotted on the first-come first served basis,” Mr S. Nallakannu, Deputy Director, Spices Board, Sivaganga, told The Hindu. The allotment process would be completed in the next two weeks, he added.

Each unit, measuring one acre and above was being allotted at the rate of Rs. 5 lakh per acre to the exporters, who were registered with Spices Board India. The exporters should set up the facilities within the stipulated two year period and those who failed to do so would forfeit the allotment, he said.

The Madurai based M/s Devi Industries has been allotted four units and it expected to commence the work shortly, he said. In the next two years, the park would be buzzing with activity, providing direct and indirect employment to as many as 2,000 people in this area, Mr Nallakannu said.

The park had been created mainly to empower the farmers who grow spices in and around the district and ensure better price realisation besides helping exporters to process the products and export after adding value, he said. Farmers from Ilayankudi, Kalayarkoil, RS Mangalam, Kamudhi could benefit from the park.

Established at a cost of Rs. 20 crore, the park has come up on a sprawling 75.73 acres. It was divided into two zones – facilitating zone and exporters’ zone. In the facilitating zone, two semi-automatic plants had been set up to process and add value to chilli and coriander (in one plant) and turmeric.

The plant for processing chilli and coriander had the capacity to grind the two products at 500 kg an hour and automatically pack the powder in 50 gm to 5 kg in retail packing and 5 kg to 50 kg in bulk packing. The plant also had the capacity to process two tonnes of whole chilli in an hour and pack them in 25 and 50 kg bags, he added.

The two plants were in operation and farmers could make use of the facilities to process their spices products and sell them after value addition and for better price realisation, he said.

The facilitating zone also had two godowns for keeping raw material and finished goods, a sterilisation plant, administrative office building, building for bank, fire fighting system and a power house, he said. The export zone had facilities like a 1.6 lakh litre capacity water tank, roads, underground water lines, stormwater drainage and weigh bridge, besides external lightings, he said.

source: http://www.thehindu.com / The Hindu / Home> News> National> TamilNadu / by Walter Scott / Sivaganga – October 27th, 2013

Recent Studies from C. Abdul Hakeem College Add New Data to Aeromonas hydrophila

Researchers detail new data in Proteobacteria. According to news reporting from Tamil Nadu, India, by NewsRx journalists, research stated, “Nanosized materials have been an important subject in basic and applied sciences. A novel, low-cost, green and reproducible bacteria, Aeromonas hydrophila mediated biosynthesis of titanium dioxide nanoparticles (TiO2 NPs) was reported.”

The news correspondents obtained a quote from the research from C. Abdul Hakeem College, “The resulting nanoparticles were characterized by FTIR, XRD, AFM and FESEM with EDX. FTIR showed characteristic bands (1643 and 3430 cm(-1)) finds the role of carboxyl group OH stretching amine NH stretch in the formation of TiO2 NPs. The XRD spectrum confirmed that the synthesized TiO2 NPs were in the form of nanocrystals, as evidenced by the peaks at 2? values of 27.47°, 31.77°, 36.11°, 41.25°, 54.39°, 56.64° and 69.54° were identified as 110, 100, 101, 111, 211, 220 and 301 reflections, respectively. The crystallite sizes were calculated using Scherrer’s formula applied to the major intense peaks and found to be the size of 40.50 nm. The morphological characterization was analyzed by FESEM and the analysis showed the NPs smooth shaped, spherical and uneven. GC-MS analysis showed the main compounds found in A. hydrophila were uric acid (2.95%), glycyl-L-glutamic acid (6.90%), glycyl-L-proline (74.41%) and L-Leucyl-D-leucine (15.74%). The potential glycyl-L-proline could have played an important role as a capping agent. A possible mechanism for the biosynthesis of TiO2 NPs has been proposed.”

According to the news reporters, the research concluded: “The antibacterial activity of the synthesized TiO2 NPs was assessed by well diffusion method toward A. hydrophila, Escherichia coliPseudomonas aeruginosa,Staphylococcus aureusStreptococcus pyogenes and Enterococcus faecalis and showed effective inhibitory activity against S. aureus (33 mm) and S. pyogenes (31 mm).”

For more information on this research see: Biological approach to synthesize TiO2 nanoparticles using Aeromonas hydrophila and its antibacterial activity. Spectrochimica Acta Part A, Molecular and Biomolecular Spectroscopy, 2013;107():82-9 (see also Proteobacteria ).

Our news journalists report that additional information may be obtained by contacting C. Jayaseelan, Unit of Nano technology and Bioactive Natural Products, Post Graduate and Research Dept. of Zoology, C Abdul Hakeem College, Melvisharam, Vellore 632 509, Tamil Nadu, India. Additional authors for this research include A.A. Rahuman, S.M. Roopan, A.V. Kirthi, J. Venkatesan, S.K. Kim, M. Iyappan and C. Siva.

Keywords for this news article include: Asia, India, Tamil Nadu, Nanoparticle, Aeromonadaceae, Nanotechnology, Proteobacteria, Aeromonas hydrophila, Emerging Technologies, Gram Negative Bacteria.

source: http://www.hispanicbusiness.com / Hispanic Business.com / Home> News> News Column / October 29th, 201 3 /by a News Reporter – Staff New Editor at Life Sciences Weekly