Promo Umroh Murah di Bandung Hubungi 021-9929-2337 atau 0821-2406-5740 Alhijaz Indowisata adalah perusahaan swasta nasional yang bergerak di bidang tour dan travel. Nama Alhijaz terinspirasi dari istilah dua kota suci bagi umat islam pada zaman nabi Muhammad saw. yaitu Makkah dan Madinah. Dua kota yang penuh berkah sehingga diharapkan menular dalam kinerja perusahaan. Sedangkan Indowisata merupakan akronim dari kata indo yang berarti negara Indonesia dan wisata yang menjadi fokus usaha bisnis kami.

Promo Umroh Murah di Bandung Alhijaz Indowisata didirikan oleh Bapak H. Abdullah Djakfar Muksen pada tahun 2010. Merangkak dari kecil namun pasti, alhijaz berkembang pesat dari mulai penjualan tiket maskapai penerbangan domestik dan luar negeri, tour domestik hingga mengembangkan ke layanan jasa umrah dan haji khusus. Tak hanya itu, pada tahun 2011 Alhijaz kembali membuka divisi baru yaitu provider visa umrah yang bekerja sama dengan muassasah arab saudi. Sebagai komitmen legalitas perusahaan dalam melayani pelanggan dan jamaah secara aman dan profesional, saat ini perusahaan telah mengantongi izin resmi dari pemerintah melalui kementrian pariwisata, lalu izin haji khusus dan umrah dari kementrian agama. Selain itu perusahaan juga tergabung dalam komunitas organisasi travel nasional seperti Asita, komunitas penyelenggara umrah dan haji khusus yaitu HIMPUH dan organisasi internasional yaitu IATA.

Promo Umroh Murah di Bandung

saco-indonesia.com, Warga Ciledug Yosefat Natanael yang berusia 28 tahun , telah  ditembak oleh orang yang tak dikenal saat

saco-indonesia.com, Warga Ciledug Yosefat Natanael yang berusia 28 tahun , telah  ditembak oleh orang yang tak dikenal saat rayakan malam tahun baru di Mal Living Word Alam Sutera, Kecamatan Serpong Utara, Tangerang, Rabu (1/1) dinihari.

Menurut berdasarkan keterangan, korban warga perumahan Duren Village Kecamatan Ciledug ini sedang merayakan malam pergantian tahun di mal tersebut bersama kerabatnya. Entah mengapa, tiba-tiba ada orang yang tidak dikenal telah menembak dirinya dan mengenai bahu kanannya sehingga ambruk

Pengunjung mal yang sedang memadati pusat perbelanjaan tersebut telah menjadi panik. Satpam mal bersama polisi yang telah berjaga di areal mal tersebut segera ke lokasi penembakan. Namun, pelaku kabur di tengah keramaian warga yang menikmati malam tahun baru.

Korban telah ditolong oleh petugas dan dilarikan ke RS Omni Alam Sutera untuk mendapatkan perawatan dokter serta mengeluarkan proyektil yang bersarang di tubuhnya.  

Editor : Dian Sukmawati 

saco-indonesia.com, Cara Kerja Generator Set Generator adalah mesin yang dapat mengubah tenaga mekanis untuk menjadi tenag

saco-indonesia.com,

Cara Kerja Generator Set

Generator adalah mesin yang dapat mengubah tenaga mekanis untuk menjadi tenaga listrik dengan melalui proses induksi elektromagnetik. Generator ini telah memperoleh energi mekanis dari prime mover. Generator arus bolak-balik (AC) telah dikenal dengan sebutan alternator. Generator ini diharapkan dapat mensuplai tenaga listrik pada saat terjadi gangguan, dimana suplai tersebut akan digunakan untuk beban prioritas.

Sedangkan genset (generator set) merupakan bagian dari generator. Genset juga merupakan suatu alat yang dapat mengubah energi mekanik menjadi energi listrik. Genset atau sistem generator penyaluran adalah suatu generator listrik yang telah terdiri dari panel, berenergi solar dan terdapat kincir angin yang telah ditempatkan pada suatu tempat. Genset juga dapat digunakan sebagai sistem cadangan listrik atau “off-grid” (sumber daya yang tergantung atas kebutuhan pemakai). Genset juga sering digunakan oleh rumah sakit dan industri yang mempercayakan sumber daya yang mantap, seperti halnya area pedesaan yang tidak ada akses untuk secara komersial menghasilkan listrik. Generator telah terpasang satu poros dengan motor diesel, yang biasanya dengan menggunakan generator sinkron (alternator) pada pembangkitan. Generator sinkron ini terdiri dari dua bagian utama yaitu: sistem medan magnet dan jangkar. Generator ini kapasitasnya besar, medan magnetnya berputar karena terletak pada rotor.

 

Konstruksi generator AC adalah sebagai berikut:

1. Rangka stator
Terbuat dari besi tuang, rangka stator juga merupakan rumah dari bagian-bagian generator yang lain.

2. Stator
Stator telah memiliki alur-alur sebagai tempat untuk meletakkan lilitan stator. Lilitan stator telah berfungsi sebagai tempat GGL induksi.

3. Rotor
Rotor adalah bagian yang berputar, pada bagian ini juga terdapat kutub-kutub magnet dengan lilitannya yang dialiri arus searah, melewati cincin geser dan sikat-sikat.

4. Cincin geser
Terbuat dari bahan kuningan atau tembaga yang yang dipasang pada poros dengan memakai bahan isolasi. Slip ring ini akan berputar bersama-sama dengan poros dan rotor.

5. Generator penguat
Generator penguat juga merupakan generator arus searah yang dipakai sebagai sumber arus.

 

Pada umumnya generator AC ini akan dibuat sedemikian rupa, sehingga lilitan tempat terjadinya GGL induksi tidak akan bergerak, sedangkan kutub-kutub akan menimbulkan medan magnet berputar. Generator itu disebut dengan generator berkutub dalam, dapat dilihat pada gambar berikut.

Keuntungan generator kutub dalam bahwa untuk dapat mengambil arus tidak dibutuhkan cincin geser dan sikat arang. Karena lilitan-lilitan tempat terjadinya GGL itu tidak akan berputar. Generator sinkron juga sangat cocok untuk mesin-mesin dengan tegangan tinggi danarus yang besar.

Secara umum kutub magnet generator sinkron dibedakan atas 2 yaitu :

1. Kutub magnet dengan bagian kutub yang menonjol (salient pole).
Konstruksi seperti ini akan digunakan untuk putaran rendah, dengan jumlah kutub yang banyak. Diameter rotornya besar dan berporos pendek.

2. Kutub magnet dengan bagian kutub yang tidak menonjol (non salient pole).
Konstruksi seperti ini digunakan untuk putaran tinggi (1500 rpm atau 3000 rpm), dengan jumlah kutub yang sedikit. Kira-kira 2/3 dari seluruh permukaan rotor dibuat alur-alur untuk tempat lilitan penguat. Yang 1/3 bagian lagi juga merupakan bagian yang utuh, yang berfungsi sebagai inti kutub.

MESIN DIESEL

Mesin diesel termasuk mesin dengan pembakaran dalam atau disebut dengan motor bakar ditinjau dari cara memperoleh energi termalnya. Untuk dapat membangkikan listrik sebuah mesin diesel menggunakan generator dengan sistem penggerak tenaga disel atauyang biasa dikenal dengan sebutan Genset (Generator Set).

Keuntungan pemakaian mesin diesel sebagai Prime Mover
- Design dan instalasi sederhana
- Auxilary equipment sederhana
- Waktu pembebanan relatif singkat
- Konsumsi bahan bakar relatif murah dan hemat

Kerugian pemakaian mesin diesel sebagai Prime Mover
- Berat mesin yang sangat berat karena harus dapat menahan getaran serta kompresi yang tinggi.
- Starting awal berat, karena kompresinya tinggi yaitu sekitar 200 bar.
- Semakin besar daya maka mesin diesel tersebut dimensinya akan semakin besar pula, hal tersebut telah menyebabkan kesulitan jika daya mesinnya sangat besar.

Ada 2 komponen utama dalam genset yaitu:
1. Prime mover atau pengerak mula, dalam hal ini mesin diesel/engine
2. Generator.

Cara Kerja Mesin Diesel
Prime mover juga merupakan peralatan yang telah mempunyai fungsi menghasilkan energi mekanis yang diperlukan untuk dapat memutar rotor generator. Pada mesin diesel/engine telah terjadi penyalaan sendiri, karena proses kerjanya telah berdasarkan udara murni yang telah dimampatkan di dalam silinder pada tekanan yang tinggi (± 30 arm), sehingga temperatur di dalam silinder naik. Dan pada saat itu bahan bakar disemprotkan dalam silinder yang bertemperatur dan bertekanan tinggi melebihi titik nyala bahan bakar sehingga akan menyala secara otomatis.

Pada mesin diesel penambahan panas atau energi senantiasa dilakukan pada tekanan yang konstan. Pada mesin diesel, piston melakukan 2 langkah pendek menuju kepala silinder pada setiap langkah daya.

1. Langkah ke atas yang pertama merupakan angkah pemasukan dan penghisapan, di sini udara dan bahan bakar masuk sedangkan poros engkol berputar ke bawah.

2. Langkah kedua merupakan langkah kompresi, poros engkol terus berputar dapat menyebabkan torak naik dan menekan bahan bakar sehingga terjadi pembakaran. Kedua proses ini (1 dan 2) juga termasuk proses pembakaran.

3. Langkah ketiga merupakan langkah ekspansi dan kerja, di sini kedua katup yaitu katup isap dan buang tertutup sedangkan poros engkol terus berputar dan menarik kembali torak ke bawah.

4. Langkah keempat merupakan langkah pembuangan, disini katup buang terbuka dan dapat menyebabkan gas akibat sisa pembakaran terbuang keluar. Gas dapat keluar karena padaproses keempat ini torak kembali bergerak naik keatas dan menyebabkan gas dapat keluar. Kedua proses terakhir ini (3 dan 4) juga termasuk proses pembuangan.

5. Setelah keempat proses tersebut, maka proses berikutnya akan mengulang kembali proses yang pertama, dimana udara dan bahan bakar masuk kembali.

Editor : Dian Sukmawati
Sumber : jualgenset.co.id

 

UNITED NATIONS — Wearing pinstripes and a pince-nez, Staffan de Mistura, the United Nations envoy for Syria, arrived at the Security Council one Tuesday afternoon in February and announced that President Bashar al-Assad had agreed to halt airstrikes over Aleppo. Would the rebels, Mr. de Mistura suggested, agree to halt their shelling?

What he did not announce, but everyone knew by then, was that the Assad government had begun a military offensive to encircle opposition-held enclaves in Aleppo and that fierce fighting was underway. It would take only a few days for rebel leaders, having pushed back Syrian government forces, to outright reject Mr. de Mistura’s proposed freeze in the fighting, dooming the latest diplomatic overture on Syria.

Diplomacy is often about appearing to be doing something until the time is ripe for a deal to be done.

 

 

Now, with Mr. Assad’s forces having suffered a string of losses on the battlefield and the United States reaching at least a partial rapprochement with Mr. Assad’s main backer, Iran, Mr. de Mistura is changing course. Starting Monday, he is set to hold a series of closed talks in Geneva with the warring sides and their main supporters. Iran will be among them.

In an interview at United Nations headquarters last week, Mr. de Mistura hinted that the changing circumstances, both military and diplomatic, may have prompted various backers of the war to question how much longer the bloodshed could go on.

“Will that have an impact in accelerating the willingness for a political solution? We need to test it,” he said. “The Geneva consultations may be a good umbrella for testing that. It’s an occasion for asking everyone, including the government, if there is any new way that they are looking at a political solution, as they too claim they want.”

He said he would have a better assessment at the end of June, when he expects to wrap up his consultations. That coincides with the deadline for a final agreement in the Iran nuclear talks.

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Whether a nuclear deal with Iran will pave the way for a new opening on peace talks in Syria remains to be seen. Increasingly, though, world leaders are explicitly linking the two, with the European Union’s top diplomat, Federica Mogherini, suggesting last week that a nuclear agreement could spur Tehran to play “a major but positive role in Syria.”

It could hardly come soon enough. Now in its fifth year, the Syrian war has claimed 220,000 lives, prompted an exodus of more than three million refugees and unleashed jihadist groups across the region. “This conflict is producing a question mark in many — where is it leading and whether this can be sustained,” Mr. de Mistura said.

Part Italian, part Swedish, Mr. de Mistura has worked with the United Nations for more than 40 years, but he is more widely known for his dapper style than for any diplomatic coups. Syria is by far the toughest assignment of his career — indeed, two of the organization’s most seasoned diplomats, Lakhdar Brahimi and Kofi Annan, tried to do the job and gave up — and critics have wondered aloud whether Mr. de Mistura is up to the task.

He served as a United Nations envoy in Afghanistan and Iraq, and before that in Lebanon, where a former minister recalled, with some scorn, that he spent many hours sunbathing at a private club in the hills above Beirut. Those who know him say he has a taste for fine suits and can sometimes speak too soon and too much, just as they point to his diplomatic missteps and hyperbole.

They cite, for instance, a news conference in October, when he raised the specter of Srebrenica, where thousands of Muslims were massacred in 1995 during the Balkans war, in warning that the Syrian border town of Kobani could fall to the Islamic State. In February, he was photographed at a party in Damascus, the Syrian capital, celebrating the anniversary of the Iranian revolution just as Syrian forces, aided by Iran, were pummeling rebel-held suburbs of Damascus; critics seized on that as evidence of his coziness with the government.

Mouin Rabbani, who served briefly as the head of Mr. de Mistura’s political affairs unit and has since emerged as one of his most outspoken critics, said Mr. de Mistura did not have the background necessary for the job. “This isn’t someone well known for his political vision or political imagination, and his closest confidants lack the requisite knowledge and experience,” Mr. Rabbani said.

As a deputy foreign minister in the Italian government, Mr. de Mistura was tasked in 2012 with freeing two Italian marines detained in India for shooting at Indian fishermen. He made 19 trips to India, to little effect. One marine was allowed to return to Italy for medical reasons; the other remains in India.

He said he initially turned down the Syria job when the United Nations secretary general approached him last August, only to change his mind the next day, after a sleepless, guilt-ridden night.

Mr. de Mistura compared his role in Syria to that of a doctor faced with a terminally ill patient. His goal in brokering a freeze in the fighting, he said, was to alleviate suffering. He settled on Aleppo as the location for its “fame,” he said, a decision that some questioned, considering that Aleppo was far trickier than the many other lesser-known towns where activists had negotiated temporary local cease-fires.

“Everybody, at least in Europe, are very familiar with the value of Aleppo,” Mr. de Mistura said. “So I was using that as an icebreaker.”

The cease-fire negotiations, to which he had devoted six months, fell apart quickly because of the government’s military offensive in Aleppo the very day of his announcement at the Security Council. Privately, United Nations diplomats said Mr. de Mistura had been manipulated. To this, Mr. de Mistura said only that he was “disappointed and concerned.”

Tarek Fares, a former rebel fighter, said after a recent visit to Aleppo that no Syrian would admit publicly to supporting Mr. de Mistura’s cease-fire proposal. “If anyone said they went to a de Mistura meeting in Gaziantep, they would be arrested,” is how he put it, referring to the Turkish city where negotiations between the two sides were held.

Secretary General Ban Ki-moon remains staunchly behind Mr. de Mistura’s efforts. His defenders point out that he is at the center of one of the world’s toughest diplomatic problems, charged with mediating a conflict in which two of the world’s most powerful nations — Russia, which supports Mr. Assad, and the United States, which has called for his ouster — remain deadlocked.

R. Nicholas Burns, a former State Department official who now teaches at Harvard, credited Mr. de Mistura for trying to negotiate a cease-fire even when the chances of success were exceedingly small — and the chances of a political deal even smaller. For his efforts to work, Professor Burns argued, the world powers will first have to come to an agreement of their own.

“He needs the help of outside powers,” he said. “It starts with backers of Assad. That’s Russia and Iran. De Mistura is there, waiting.”

Public perceptions of race relations in America have grown substantially more negative in the aftermath of the death of a young black man who was injured while in police custody in Baltimore and the subsequent unrest, far eclipsing the sentiment recorded in the wake of turmoil in Ferguson, Mo., last summer.

Americans are also increasingly likely to say that the police are more apt to use deadly force against a black person, the latest New York Times/CBS News poll finds.

The poll findings highlight the challenges for local leaders and police officials in trying to maintain order while sustaining faith in the criminal justice system in a racially polarized nation.

Sixty-one percent of Americans now say race relations in this country are generally bad. That figure is up sharply from 44 percent after the fatal police shooting of Michael Brown and the unrest that followed in Ferguson in August, and 43 percent in December. In a CBS News poll just two months ago, 38 percent said race relations were generally bad. Current views are by far the worst of Barack Obama’s presidency.

The negative sentiment is echoed by broad majorities of blacks and whites alike, a stark change from earlier this year, when 58 percent of blacks thought race relations were bad, but just 35 percent of whites agreed. In August, 48 percent of blacks and 41 percent of whites said they felt that way.

Looking ahead, 44 percent of Americans think race relations are worsening, up from 36 percent in December. Forty-one percent of blacks and 46 percent of whites think so. Pessimism among whites has increased 10 points since December.

Continue reading the main story
Do you think race relations in the United States are generally good or generally bad?
60
40
20
0
White
Black
May '14
May '15
Generally bad
Continue reading the main story
Do you think race relations in the United States are getting better, getting worse or staying about the same?
Getting worse
Staying the same
Getting better
Don't know/No answer
All adults
Whites
Blacks
44%
37
17
46
36
16
41
42
15

The poll finds that profound racial divisions in views of how the police use deadly force remain. Blacks are more than twice as likely to say police in most communities are more apt to use deadly force against a black person — 79 percent of blacks say so compared with 37 percent of whites. A slim majority of whites say race is not a factor in a police officer’s decision to use deadly force.

Overall, 44 percent of Americans say deadly force is more likely to be used against a black person, up from 37 percent in August and 40 percent in December.

Blacks also remain far more likely than whites to say they feel mostly anxious about the police in their community. Forty-two percent say so, while 51 percent feel mostly safe. Among whites, 8 in 10 feel mostly safe.

One proposal to address the matter — having on-duty police officers wear body cameras — receives overwhelming support. More than 9 in 10 whites and blacks alike favor it.

Continue reading the main story
How would you describe your feelings about the police in your community? Would you say they make you feel mostly safe or mostly anxious?
Mostly safe
Mostly anxious
Don't know/No answer
All adults
Whites
Blacks
75%
21
3
81
16
3
51
42
7
Continue reading the main story
In general, do you think the police in most communities are more likely to use deadly force against a black person, or more likely to use it against a white person, or don’t you think race affects police use of deadly force?
Police more likely to use deadly force against a black person
Police more likely to use deadly force against a white person
Race DOES NOT affect police use of deadly force
Don't know/No answer
All adults
Whites
Blacks
44%
37%
79%
2%
2%
1%
46%
53%
16%
9%
8%
4%
Continue reading the main story
Do you favor or oppose on-duty police officers wearing video cameras that would record events and actions as they occur?
Favor
Oppose
Don't know/No answer
All adults
Whites
Blacks
92%
93%
93%
6%
5%
5%
2%
2%
2%

Asked specifically about the situation in Baltimore, most Americans expressed at least some confidence that the investigation by local authorities would be conducted fairly. But while nearly two-thirds of whites think so, fewer than half of blacks agree. Still, more blacks are confident now than were in August regarding the investigation in Ferguson. On Friday, six members of the police force involved in the arrest of Mr. Gray were charged with serious offenses, including manslaughter. The poll was conducted Thursday through Sunday; results from before charges were announced are similar to those from after.

Reaction to the recent turmoil in Baltimore, however, is similar among blacks and whites. Most Americans, 61 percent, say the unrest after Mr. Gray’s death was not justified. That includes 64 percent of whites and 57 percent of blacks.

Continue reading the main story
As you may know, a Baltimore man, Freddie Gray, recently died after being in the custody of the Baltimore police. How much confidence do you have that the investigation by local authorities into this matter will be conducted fairly?
A lot
Some
Not much
None at all
Don't know/No answer
All adults
Whites
Blacks
29%
31
22
14
5
31
33
20
11
5
20
26
30
22
In general, do you think the unrest in Baltimore after the death of Freddie Gray was justified, or do you think the unrest was not justified?
Justified
Not justified
Don't know/No answer
All adults
Whites
Blacks
28%
61
11
26
64
11
37
57
6

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