Finis Vietnam
Jacque Waiden
Sarah G. Grant is Associate Professor of Anthropology at California State University, Fullerton. Her research uses ethnographic methods to understand the human experiences of industrial agriculture, climate change, and precarity in contemporary Vietnam. She is finishing her first book length manuscript about industrial coffee production in the Central Highlands of Vietnam and developing two new research projects. The first is a multispecies examination of fertilizer production, birds, aquatic life, and climate change in the Mekong Delta. The second is an ethnography of citizen science, conservation, and birdwatching communities in a transnational context.
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Schistura finis is a species of ray-finned fish in the genus Schistura, the most speciose of the stone loach genera. It has only been recorded from small streams in the headwaters of the Nam Mo River on the frontier between Laos and Vietnam.[1]
Gelaran multi-event 13th ASEAN Schools Games (ASG) 2024 di Da Nang, Vietnam resmi berakhir, Jumat (7/6). Dalam pesta olahraga para pelajar se-Asia Tenggara ini, Kontingen Indonesia berhasil finis di peringkat kedua klasemen akhir perolehan medali.
Da Nang: Gelaran multi-event 13th ASEAN Schools Games (ASG) 2024 di Da Nang, Vietnam resmi berakhir, Jumat (7/6). Dalam pesta olahraga para pelajar se-Asia Tenggara ini, Kontingen Indonesia berhasil finis di peringkat kedua klasemen akhir perolehan medali.
Indonesia secara keseluruhan mengumpulkan 63 medali dari enam cabang olahraga (cabor). Rinciannya 22 medali emas, 22 medali perak, dan 19 medali perunggu. Renang menjadi cabor terbanyak yang mendulang emas dengan total 11 emas, diikuti pencak silat dengan 5 emas, bulu tangkis dan atletik masing-masing 2 emas, serta masing-masing 1 emas di cabor vovinam dan bola basket.
Dengan hasil ini Indonesia berada di posisi runner-up klasemen akhir, berada di bawah tuan rumah Vietnam dengan 44 emas sebagai juara umum, dan di atas Thailand yang membawa pulang 17 emas di peringkat ketiga.
Menurut CdM Andri, pencapaian Indonesia ini tak terlepas dari peran semua pihak yang terlibat di dalam tim kontingen. Mulai dari para atlet dan pelatih di cabor, tim headquarter, serta tim-tim lainnya yang telah mendukung perjuangan para pelajar di ASG edisi ke-13 ini. Karenanya dia mengucapkan terima kasih atas semua kontribusi dan kerja sama yang diberikan.
Dalam hal ini pihaknya memberikan apresiasi bagi perjuangan setiap cabor yang mampu melampaui target prestasi. Hasil tersebut kata CdM Andri bisa terwujud berkat kerja sama dan juga kerja keras dari semua atlet dan pelatih. Pihak sekretariat dalam hal ini hanya bersifat memberikan dukungan.
Apresiasi juga diberikan kepada cabor-cabor yang telah memenuhi target maupun yang belum memenuhi target. Pasalnya posisi Indonesia di peringkat kedua klasemen akhir juga tak bisa dilepaskan dari kontribusi medali yang telah disumbangkan cabor-cabor tersebut.
Lebih lanjut disampaikan, ajang ASG ini bukan sekadar mencari prestasi. Melainkan juga mencari pengalaman bertanding sebagai bagian pembinaan atlet-atlet usia muda. Maka dari itu perjuangan para atlet belia Indonesia ini tidak boleh berhenti di sini.
Tak luput Andri menyampaikan terima kasih atas dukungan Menpora Dito Ariotedjo serta Deputi 4 Bidang Peningkatan Prestasi Olahraga Kemenpora RI. Pihaknya bakal segera melakukan evaluasi bersama dengan seluruh cabor yang berkesempatan hadir di ASG kali ini. (luk)
Metal: Real 925 Sterling SilverFinish: Platinum ( Dipped in Rhodium for Long Lasting Platinum Finish)Weight: 2.250 GramSize: USA-7.5 (IND-16) (Dia-17.7mm)Width: 6 mmStones: Cubic Zirconia's' StuddedQuality: Our all products are as per IEQS - International Export Quality StandardsThis 925 sterling silver ring features a beautiful, eye-catching white CZ-studded design with a luxurious platinum finish. Crafted with premium quality, its unique design makes it a timeless choice that will never go out of style.
For many buyers, a smooth surface finish of the casting parts more than the bonus visually appearance. This first testing round by naked eyes can be a sign to show off that the foundry provides high-quality casting parts.
From the technical view, the surface finish results in the performance of the casting products. A poor quality casting surface with defects such as porosity, cracks can lower the strength of the products, and lead to an increase in the eventual cost for cleaning, finishing, and machining.
Although there are many methods to fabricate metal casting parts, sand casting is still one of the most preferable processes applied in foundries. Statistically, more than 70% of casting parts worldwide are made from sand casting with its presence in a range of industries, from outdoor furniture, transportation, automotive, energy, marine to aerospace.
Briefly, sand casting is the molding method in which sand is the main material to build the mold for the casting. The sand casting process can be divided into 2 main types based on the different ways of sand bonding that is green sand casting and furan sand casting.
Explained the popularity of sand casting, it is an economic casting method and flexible in casting part sizes (allow to manufacture from a few pounds to several tons). With respect to simple casting products, foundry prefers to use green sand casting to minimize the cost. At the same time, furan resin sand is suitable to produce more complex details and its manufacturing cost is higher.
Sand casting is a cost-saving method overall, however, they remain a huge consideration on its surface finish. The aluminum sand casting surface finish is often poorer than other casting methods such as die-casting, shell mold casting, or permanent mold casting.
Accordingly, the typical sand casting surface finish aluminum ranges from 250-900 RMS in the case of green sand casting (poorest among the casting methods) and a better surface finish in case of furan resin sand casting (150-600 RMS).
Generally, in comparison to other aluminum casting methods, the surface finish of aluminum casting in sand casting is among the poorest. This is the reason why most aluminum sand casting products required additional processing such as surface treatment, machining, finishing to be completed.
As mentioned above the sand casting surface finish of aluminum can range from 150 RMS (acceptable and less machining required) to 900 RMS (required a lot of additional processes). In fact, the foundry can reach the minimize roughness by well controlling the factors affecting the aluminum sand casting surface finish.
Sand is the main material accounting for a large majority of the mold in aluminum sand casting. So that the surface finish of casting depends greatly on the sand types and their quality. Any breakdown in sand mold can result in the roughness casting surface finish.
Natural molding sands include a sufficient amount of binder, whereas synthetic molding sands required adding artificial binders and additives to bond sand grains. Naturally, bonding sand is often known as green sand with good moisture content, while furan resin sand is mostly used as synthetic molding sand.
On the other hand, the cost for resin sand is higher, but it delivers a better aluminum surface finish. This type of synthetic sand is usually applied to fabricate high surface required applications such as automotive parts.
When the molten aluminum flows into the cavity, the larger sand grains can create peaks and valleys that cause roughness on the surface. On the other hand, the fine sand grain can sit tightly to produce a smooth casting surface finish.
Permeability refers to how well the sand can vent and how well the gases pass through the sand. This sand ability allows exhausting the gasses such as nitrogen, steam, hydrogen, and carbon dioxide that generated as the aluminum fluid is poured.
As the casting solidifies, the sand is required to be easily collapsed to allow the free contraction of the aluminum. If the sand has poor collapsibility, the contraction of aluminum is hindered by the mold, hence, resulting in defects such as hot tears and cracking. This property is especially needed in cores.
Compaction is the process in which the sand is rammed and pressed into the mold. The sand mold required to be tightly and correctly rammed to ensure that all the mold edges are fully filled and unable to be broke during the casting process.
Note: Each compaction method is given a certain point in the measurement table. The smoothness level increases from 1 to 5. Respectively 1 refer to poor smoothness, and 5 is superior smoothness.
Mold coating is a layer designed to withstand the high temperature as molten aluminum flows into the mold cavity and a barrier between the hot aluminum fluid and mold & core surface. Mold coating is also known as a protective coating, refractory coatings, washes, etc.
The mold coatings are suspensions of a high-temperature mineral or refractory in a liquid form. After being coated on the mold or core surface, the liquid evaporates and a refractory layer sticks on the sand surface.
This layer acts as a protective layer to reduce or eliminate phenomena such as metal penetration, burn on, erosion of sand by molten aluminum, scraps, and thus improve the aluminum casting surface finish and lower the cleaning costs.
However, please well noted that the benefits of mold coating on improving the sand casting surface finish obtain only if the coating layer is chosen properly, applied, and dried correctly. Improper coating types or incorrect preparation can lead to poor surface finish and even coating defects such as scabs, blows, gas holes, inclusions, etc. in aluminum sand casting.
The function of the carrier, as its name, to carry the refractory particles to the mold and core surface. After the coating is coated, the fluid of the carrier will evaporate and leave the refractory layer sticking on the mold and core surface.
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