Archive for November, 2009
New Jupiter Z Finally Released
November 30th, 2009
Today Yamaha released New Jupiter to Indonesian market. Attended by Jorge Lorenzo, YMKI deployed its new line up of moped
Diagram Fasa (Phase Diagram)
November 29th, 2009
Pada proses pembuatannya, komposisi kimia yang dibutuhkan diperoleh ketika baja dalam bentuk fasa cair pada suhu yang tinggi.
Pada saat proses pendinginan dari suhu lelehnya, baja mulai berubah menjadi fasa padat pada suhu 13500, pada fasa ini lah berlangsung perubahan struktur mikro. Perubahan struktur mikro dapat juga dilakukan dengan jalan heat treatment.
Bila proses pendinginan dilakukan secara perlahan, maka akan dapat dicapai tiap jenis struktur mikro yang seimbang sesuai dengan komposisi kimia dan suhu baja. Perubahan struktur mikro pada berbagai suhu dan kadar karbon dapat dilihat pada Diagram Fase Keseimbangan (Equilibrium Phase Diagram).
Penjelasan diagram:
- Pada kandungan karbon mencapai 6.67% terbentuk struktur mikro dinamakan Sementit Fe3C (dapat dilihat pada garis vertical paling kanan).
- Sifat – sifat cementitte: sangat keras dan sangat getas
- Pada sisi kiri diagram dimana pada kandungan karbon yang sangat rendah, pada suhu kamar terbentuk struktur mikro ferit.
- Pada baja dengan kadar karbon 0.83%, struktur mikro yang terbentuk adalah Perlit, kondisi suhu dan kadar karbon ini dinamakan titik Eutectoid.
- Pada baja dengan kandungan karbon rendah sampai dengan titik eutectoid, struktur mikro yang terbentuk adalah campuran antara ferit dan perlit.
- Pada baja dengan kandungan titik eutectoid sampai dengan 6.67%, struktur mikro yang terbentuk adalah campuran antara perlit dan sementit.
- Pada saat pendinginan dari suhu leleh baja dengan kadar karbon rendah, akan terbentuk struktur mikro Ferit Delta lalu menjadi struktur mikro Austenit.
- Pada baja dengan kadar karbon yang lebih tinggi, suhu leleh turun dengan naiknya kadar karbon, peralihan bentuk langsung dari leleh menjadi Austenit.
Dari diagram diatas dapat kita lihat bahwa pada proses pendinginan perubahan – perubahan pada struktur kristal dan struktur mikro sangat bergantung pada komposisi kimia
Siklus OTTO
November 29th, 2009
Under Vine Weeding
November 29th, 2009
Controlling weeds under vine is an important job in the vineyard. Weeds compete for water and nutrients and can lead to stressed vines and stressed vines = stressed wines.
The most popular method for controlling weeds is by spraying a band underneath the vine row with herbicide. This gives excellent control of weeds but does have disadvantages. We had found that we had in effect been selecting for hard to kill weeds.
Last year we bit the bullet and purchased an under vine weeder, to take out the problem weeds.
The weeder has a blade that slides along just below the surface slicing through plant roots. The obvious problem to overcome with the design of an under vine weeder is to not damage the grape vine. This has been achieved by the wonder of hydraulics. Above and slightly in front of the blade is a sensor bar which controls the blade; move the sensor bar and you move the blade. The sensor bar is 30 cm above the ground and as the weeder moves along the row the sensor bar is pushed back by a vine or post and slides around it and the blade follows the sensor bar.
It was necessary to put stakes around irrigation risers (pipes that feed the irrigation lines from the underground mainline) to catch the sensor bar and protect the riser pipes from being cut by the weeder. Other than that it was an easy change to make and in our soils the under vine weeder works really well.
Cheers for now
Stuart
Join us on Facebook
Join us on Twitter
KKN Group to diversify into steel making
November 27th, 2009
Kolkata based KKN Group is planning to venture into steel manufacturing by end- December 2009.
Estimation Engineer - Jeddah, Saudi Arabia
November 26th, 2009
Hi,
Here the placement for Estimation Engineer – Jeddah, Saudi Arabia .
Qualification:
Experience:
- 5 years experience in estimation within an EPC company.
Skills Required:
- Fully conversant with international codes and specifications for materials (such as API 650; API 2000; ASME; AISC; ASTM)
- Extensive exposure to engineering design, procurement and contracting in steel industry.
- Capable of analyzing project scope of work, client requirements, BOQ, project milestones and specifications from the supplied bid documents.
- capable of preparing detailed cost sheets (capable of integrating engineering, procurement, construction and delivery tasks into detailed costing).
- Excellent statistical and numerical skill; conversant with tendering process.
Would you be interested ?
Please send us your latest updated profile with contact nos.
current & expected salary details and joining time required to
You may also suggest this opening to your friends who may be interested.
Further Information:
KBS Consultants
Flat H,Kulothungan Apts,
No, 5 Natesan Road
Ashoknagar,
Chennai 600 083.
India
Phone: +91-44 2489 5341 / 2371 9622
Visit Our Sites:
International jobs:
SAP ERP Jobs :
Core Engineering Jobs :
Technology Jobs :
India Jobs :
A Step Beyond Human - Hugh Herr is building the world’s most advanced prosthetic foot
November 25th, 2009
A fascinating story of courage, dedication, skill, and genius. Hugh Herr is an inspirational guy…and we, at General Catalyst, are so proud to be a part of his journey.
A Step Beyond Human
Andy Greenberg
Forbes Magazine dated December 14, 2009
MIT professor and double amputee Hugh Herr is building the world’s most advanced prosthetic foot.
On his way to a lunch meeting a few years ago Hugh Herr was running late. So he parked his Honda Accord in a handicapped parking spot, sprang out of the car and jogged down the sidewalk. Within seconds a policeman called out, asking to see his disability permit. When Herr pointed it out on his dashboard, the cop eyed him suspiciously. “What’s your affliction?” he asked dryly. Herr, a slim and unassuming 6-footer with dark, neatly parted hair, took a step toward the officer and responded in an even tone: “I have no [expletive] legs.”
Blurring the boundaries of disability is a trick that Herr, director of the biomechatronics group at MIT’s Media Lab, has spent the last 27 years perfecting. At age 17 both of Herr’s legs were amputated 6 inches below the knee after a rock climbing trip ended in severe frostbite. Today he’s one of the world’s preeminent prosthetics experts. His goal: to build artificial limbs that are superior to natural ones. His favorite test subject: himself. “I like to say that there are no disabled people,” says Herr, 45. “Only disabled technology.”
Read more at the link below.
via .
Needed: Mechanics’ Dogs
November 25th, 2009
The Citizens of Edinburgh Synchronize Their Watches With The Mechanical Cow
November 25th, 2009
A mechanical cow, that lets out a blast of steam in a strictly defined time, became the new point of interest of Scotland’s capital.
The cow’s backside, that is attached to the wall of Rowan Tree pub in the historic neighborhood of Edinburgh, called the Old Town, raises its tail three times a day and shoots out the blast of steam.
The mechanism works by hours, and thus allows people to synchronize their watches, as well as the another Edinburgh’s sight – One O’clock Gun, a canon, which fires every day at 13.00.
The cow itself was set up more than a year ago, though the mechanism that allows her to let off the steam was installed quite recently.
In spite of it, the cow already acquired popularity not only among the local citizens, but also among the tourists.
The owner of the pub, Norrie Rowan said: “The cow already became popular all over the Edinburgh, that is why hundreds of tourist pass by my pub every day and take the pictures of it.”
Many countries have already realized the importance of the development of the touristic branch, especially in city travel and are already spending huge budgets to install interesting objects and places of interest in the cities.
A good example of this are the Baltic countries that have recently entered the Schengen Zone. This means a possible increase in the tourist flow and surely great income, because an average city travel tourist spends more than $500 during his stay in the city.
Therefore such new members of the Schengen Agreement as Latvia, Estonia and Lithuania are refurbishing their cities, resorts and points of interest and performing huge advertising campaigns to attract as many tourists as possible.
Sales Engineer - Jeddah, Saudi Arabia
November 25th, 2009
Hi,
Here the placement for Sales Engineer – Jeddah, Saudi Arabia .
Qualification:
Experience:
- 3 to 5 years experience in the occupation in similar industrial environment.
Skills Required:
- Basic estimation skill; negotiation skill.
- Capable of preparing sales / analytical reports.
- Capable of handling customer/client’s enquiries efficiently.
Would you be interested ?
Please send us your latest updated profile with contact nos.
current & expected salary details and joining time required to
You may also suggest this opening to your friends who may be interested.
Further Information:
KBS Consultants
Flat H,Kulothungan Apts,
No, 5 Natesan Road
Ashoknagar,
Chennai 600 083.
India
Phone: +91-44 2489 5341 / 2371 9622
Visit Our Sites:
International jobs:
SAP ERP Jobs :
Core Engineering Jobs :
Technology Jobs :
India Jobs :


MIT professor and double amputee Hugh Herr is building the world’s most advanced prosthetic foot.