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Biro Perjalanan Haji dan Umrah yang memfokuskan diri sebagai biro perjalanan yang bisa menjadi sahabat perjalanan ibadah Anda, yang sudah sangat berpengalaman dan dipercaya sejak tahun 2010, mengantarkan tamu Allah minimal 5 kali dalam sebulan ke tanah suci tanpa ada permasalahan. Paket yang tersedia sangat beragam mulai paket umroh 9 hari, 12 hari, umroh wisata muslim turki, dubai, aqso. Biaya umroh murah yang sudah menggunakan rupiah sehingga jamaah tidak perlu repot dengan nilai tukar kurs asing. promo umroh desember Mustika Jaya
METODE PEMBUANGAN SAMPAH
Penimbunan
darat
Pembuangan sampah pada penimbunan darat termasuk
menguburnya untuk membuang sampah, metode ini adalah metode paling populer di dunia. Penimbunan
ini biasanya dilakukan di tanah yg ditinggalkan , lubang bekas pertambangan , atau lubang lubang
dalam. Sebuah situs penimbunan darat yg di desain dan di kelola dengan baik akan menjadi tempat
penimbunan sampah yang hiegenis dan murah. Sedankan penimbunan darat yg tidak dirancang dan tidak
dikelola dengan baik akan menyebabkan berbagai masalah lingkungan , diantaranya angin berbau
sampah , menarik berkumpulnya Hama , dan adanya genangan air sampah. Efek samping lain dari
sampah adalah gas methan dan karbon dioksida yang juga sangat berbahaya. (di bandung kandungan
gas methan ini meledak dan melongsorkan gunung sampah).
Karakter desain
dari penimbunan darat yang modern diantaranya adalah metode pengumpulan air sampah menggunakan
bahan tanah liat atau pelapis plastik.Sampah biasanya dipadatkan untuk menambah kepadatan dan
kestabilannya , dan ditutup untuk tidak menarik hama (biasanya tikus). Banyak penimbunan samapah
mempunyai sistem pengekstrasi gas yang terpasang untuk mengambil gas yang terjadi. Gas yang
terkumpul akan dialirkan keluar dari tempat penimbunan dan dibakar di menara pemabakar atau
dibakar di mesin berbahan bakar gas untuk membangkitkan listrik.
Pembakaran/pengkremasian sampah
Pembakaran adalah metode yang melibatkan pembakaran zat sampah. Pengkremasian dan
pengelolaan sampah lain yg melibatkan temperatur tinggi baisa disebut "Perlakuan
panas". kremasi merubah sampah menjadi panas, gas, uap dan abu. Pengkremasian dilakukan oleh
perorangan atau oleh industri dalam skala besar. Hal ini bsia dilakukan untuk sampah padat , cari
maupun gas. Pengkremasian dikenal sebagai cara yang praktis untuk membuang beberapa jenis sampah
berbahaya, contohnya sampah medis (sampah biologis). Pengkremasian adalah metode yang
kontroversial karena menghasilkan polusi udara.
Pengkremasian biasa dilakukan
dinegara seperti jepang dimana tanah begitu terbatas ,karena fasilitas ini tidak membutuhkan
lahan seluas penimbunan darat.Sampah menjadi energi (Waste-to-energy=WtE) atau energi dari sampah
(energy-from-waste = EfW) adalah terminologi untuk menjelaskan samapah yang dibakar dalam tungku
dan boiler guna menghasilkan panas/uap/listrik.Pembakaran pada alat kremasi tidaklah selalu
sempurna , ada keluhan adanya polusi mikro dari emisi gas yang keluar cerobongnya. Perhatian
lebih diarahkan pada zat dioxin yang kemungkinan dihasilkan di dalam pembakaran dan mencemari
lingkungan sekitar pembakaran. Dilain pihak , pengkremasian seperti ini dianggap positif karena
menghasilkan listrik , contoh di Indonesia adalah rencana PLTSa Gede Bage di sekitar kota
Bandung.
Metode Daur-ulang Sampah
Proses pengambilan barang yang masih memiliki nilai dari sampah untuk digunakan kembali
disebut sebagai daur ulang.Ada beberapa cara daur ulang , pertama adalah mengambil bahan
sampahnya untuk diproses lagi atau mengambil kalori dari bahan yang bisa dibakar utnuk
membangkitkan listik. Metode metode baru dari daur ulang terus ditemukan dan akan dijelaskan
dibawah.
Pengolahan kemabali secara fisik.
Metode ini adalah aktivitas paling populer dari daur ulang , yaitu mengumpulkan dan
menggunakan kembali sampah yang dibuang , contohnya botol bekas pakai yang dikumpulkan kembali
untuk digunakan kembali. Pengumpulan bisa dilakukan dari sampah yang sudah dipisahkan dari awal
(kotak sampah/kendaraan sampah khusus), atau dari sampah yang sudah tercampur.
Sampah yang biasa
dikumpulkan adalah kaleng minum aluminum , kaleng baja makanan/minuman, Botol HDPE dan PET ,
botol kaca , kertas karton, koran, majalah, dan kardus. Jenis plastik lain seperti (PVC, LDPE,
PP, dan PS) juga bisa di daur ulang.Daur ulang dari produk yang komplek seperti komputer atau
mobil lebih susah, karena harus bagian bagiannya harus diurai dan dikelompokan menurut jenis
bahannya.
Pengolahan biologi
• Pengkomposan.
Material sampah organik
, seperti zat tanaman , sisa makanan atau kertas , bisa diolah dengan menggunakan proses biologis
untuk kompos, atau dikenal dengan istilah pengkomposan.Hasilnya adalah kompos yang bisa digunakan
sebagi pupuk dan gas methana yang bisa digunakan untuk membangkitkan listrik.
Contoh dari pengelolaan sampah menggunakan teknik
pengkomposan adalah Green Bin Program (program tong hijau) di Toronto, Kanada, dimana sampah
organik rumah tangga , seperti sampah dapur dan potongan tanaman dikumpulkan di kantong khusus
untuk di komposkan.
• Pemulihan energi
Kandungan energi yang terkandung dalam sampah bisa diambil langsung dengan cara
menjadikannya bahan bakar, atau secara tidak langsung dengan cara mengolahnya menajdi bahan bakar
tipe lain. Daur-ulang melalui cara "perlakuan panas" bervariasi mulai dari
menggunakannya sebakai bahan bakar memasak atau memanaskan sampai menggunakannya untuk memanaskan
boiler untuk menghasilkan uap dan listrik dari turbin-generator. Pirolisa dan gasifikasi adalah
dua bentuk perlakukan panas yang berhubungan , dimana sampah dipanaskan pada suhu tinggi dengan
keadaan miskin oksigen. Proses ini biasanya dilakukan di wadah tertutup pada Tekanan tinggi.
Pirolisa dari sampah padat mengubah sampah menjadi produk berzat padat , gas, dan cair. Produk
cair dan gas bisa dibakar untuk menghasilkan energi atau dimurnikan menjadi produk lain. Padatan
sisa selanjutnya bisa dimurnikan menjadi produk seperti karbon aktif. Gasifikasi dan Gasifikasi
busur plasma yang canggih digunakan untuk mengkonversi material organik langsung menjadi Gas
sintetis (campuran antara karbon monoksida dan hidrogen). Gas ini kemudian dibakar untuk
menghasilkan listrik dan uap.
Ex-C.I.A. Official Rebuts Republican Claims on Benghazi Attack in ‘The Great War of Our Time’
WASHINGTON — The former deputy director of the C.I.A. asserts in a forthcoming book that Republicans, in their eagerness to politicize the killing of the American ambassador to Libya, repeatedly distorted the agency’s analysis of events. But he also argues that the C.I.A. should get out of the business of providing “talking points” for administration officials in national security events that quickly become partisan, as happened after the Benghazi attack in 2012.
The official, Michael J. Morell, dismisses the allegation that the United States military and C.I.A. officers “were ordered to stand down and not come to the rescue of their comrades,” and he says there is “no evidence” to support the charge that “there was a conspiracy between C.I.A. and the White House to spin the Benghazi story in a way that would protect the political interests of the president and Secretary Clinton,” referring to the secretary of state at the time, Hillary Rodham Clinton.
But he also concludes that the White House itself embellished some of the talking points provided by the Central Intelligence Agency and had blocked him from sending an internal study of agency conclusions to Congress.
Photo
Michael J. MorellCredit Mark Wilson/Getty Images
“I finally did so without asking,” just before leaving government, he writes, and after the White House released internal emails to a committee investigating the State Department’s handling of the issue.
A lengthy congressional investigation remains underway, one that many Republicans hope to use against Mrs. Clinton in the 2016 election cycle.
In parts of the book, “The Great War of Our Time” (Twelve), Mr. Morell praises his C.I.A. colleagues for many successes in stopping terrorist attacks, but he is surprisingly critical of other C.I.A. failings — and those of the National Security Agency.
Soon after Mr. Morell retired in 2013 after 33 years in the agency, President Obama appointed him to a commission reviewing the actions of the National Security Agency after the disclosures of Edward J. Snowden, a former intelligence contractor who released classified documents about the government’s eavesdropping abilities. Mr. Morell writes that he was surprised by what he found.
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“You would have thought that of all the government entities on the planet, the one least vulnerable to such grand theft would have been the N.S.A.,” he writes. “But it turned out that the N.S.A. had left itself vulnerable.”
He concludes that most Wall Street firms had better cybersecurity than the N.S.A. had when Mr. Snowden swept information from its systems in 2013. While he said he found himself “chagrined by how well the N.S.A. was doing” compared with the C.I.A. in stepping up its collection of data on intelligence targets, he also sensed that the N.S.A., which specializes in electronic spying, was operating without considering the implications of its methods.
“The N.S.A. had largely been collecting information because it could, not necessarily in all cases because it should,” he says.
Mr. Morell was a career analyst who rose through the ranks of the agency, and he ended up in the No. 2 post. He served as President George W. Bush’s personal intelligence briefer in the first months of his presidency — in those days, he could often be spotted at the Starbucks in Waco, Tex., catching up on his reading — and was with him in the schoolhouse in Florida on the morning of Sept. 11, 2001, when the Bush presidency changed in an instant.
Mr. Morell twice took over as acting C.I.A. director, first when Leon E. Panetta was appointed secretary of defense and then when retired Gen. David H. Petraeus resigned over an extramarital affair with his biographer, a relationship that included his handing her classified notes of his time as America’s best-known military commander.
Mr. Morell says he first learned of the affair from Mr. Petraeus only the night before he resigned, and just as the Benghazi events were turning into a political firestorm. While praising Mr. Petraeus, who had told his deputy “I am very lucky” to run the C.I.A., Mr. Morell writes that “the organization did not feel the same way about him.” The former general “created the impression through the tone of his voice and his body language that he did not want people to disagree with him (which was not true in my own interaction with him),” he says.
But it is his account of the Benghazi attacks — and how the C.I.A. was drawn into the debate over whether the Obama White House deliberately distorted its account of the death of Ambassador J. Christopher Stevens — that is bound to attract attention, at least partly because of its relevance to the coming presidential election. The initial assessments that the C.I.A. gave to the White House said demonstrations had preceded the attack. By the time analysts reversed their opinion, Susan E. Rice, now the national security adviser, had made a series of statements on Sunday talk shows describing the initial assessment. The controversy and other comments Ms. Rice made derailed Mr. Obama’s plan to appoint her as secretary of state.
The experience prompted Mr. Morell to write that the C.I.A. should stay out of the business of preparing talking points — especially on issues that are being seized upon for “political purposes.” He is critical of the State Department for not beefing up security in Libya for its diplomats, as the C.I.A., he said, did for its employees.
But he concludes that the assault in which the ambassador was killed took place “with little or no advance planning” and “was not well organized.” He says the attackers “did not appear to be looking for Americans to harm. They appeared intent on looting and conducting some vandalism,” setting fires that killed Mr. Stevens and a security official, Sean Smith.
Mr. Morell paints a picture of an agency that was struggling, largely unsuccessfully, to understand dynamics in the Middle East and North Africa when the Arab Spring broke out in late 2011 in Tunisia. The agency’s analysts failed to see the forces of revolution coming — and then failed again, he writes, when they told Mr. Obama that the uprisings would undercut Al Qaeda by showing there was a democratic pathway to change.
“There is no good explanation for our not being able to see the pressures growing to dangerous levels across the region,” he writes. The agency had again relied too heavily “on a handful of strong leaders in the countries of concern to help us understand what was going on in the Arab street,” he says, and those leaders themselves were clueless.
Moreover, an agency that has always overvalued secretly gathered intelligence and undervalued “open source” material “was not doing enough to mine the wealth of information available through social media,” he writes. “We thought and told policy makers that this outburst of popular revolt would damage Al Qaeda by undermining the group’s narrative,” he writes.
Instead, weak governments in Egypt, and the absence of governance from Libya to Yemen, were “a boon to Islamic extremists across both the Middle East and North Africa.”
Mr. Morell is gentle about most of the politicians he dealt with — he expresses admiration for both Mr. Bush and Mr. Obama, though he accuses former Vice President Dick Cheney of deliberately implying a connection between Al Qaeda and Iraq that the C.I.A. had concluded probably did not exist. But when it comes to the events leading up to the Bush administration’s decision to go to war in Iraq, he is critical of his own agency.
Mr. Morell concludes that the Bush White House did not have to twist intelligence on Saddam Hussein’s alleged effort to rekindle the country’s work on weapons of mass destruction.
“The view that hard-liners in the Bush administration forced the intelligence community into its position on W.M.D. is just flat wrong,” he writes. “No one pushed. The analysts were already there and they had been there for years, long before Bush came to office.”