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Sunday, May 30, 2021

Tianzhou-2 cargo craft completes rendezvous, docking with China's space station core cabin at record speed


China's Tianhe space station core cabin received its first "visiting guest" - the Tianzhou-2 cargo spacecraft early Sunday, about 8 hours after the latter's launch, setting a new record in China's space history.

According to the China Manned Space Agency, the rendezvous and docking of the Tianzhou [Heavenly Vessel] cargo spacecraft with the Tianhe core cabin took around eight hours after the former was launched from Wenchang spaceport from South China's Hainan Province via a Long March 7 carrier rocket at 8:55 pm Saturday.

The first spaceship launched in the space station construction phase, Tianzhou-2 weighed 13.5 tons at launch, and is capable of sending a payload of 6.9 tons for supply missions. Its in-orbit service is at least one year, said Feng Yong, commander-in-chief of the Tianzhou-2 mission from the project contractor China Academy of Space Technology (CAST).

The 10.6-meter-long, 3.35-meter-diameter Tianzhou-2 cargo spaceship has two components - a totally enclosed cargo cabin and a propelling cabin, according to CAST.

The carry-on onboard the Tianhe spacecraft includes consumables that are designed to support three astronauts on their space missions for three months, space suits for missions outside cabin and other supplies, Feng revealed, adding that during its docking with the space station core cabin, it will also carry out multiple in-orbit experiments.

Tianzhou-2 will also deliver propellants to refuel the Tianhe core cabin, Mu Guoxin, a CAST publicity official said.

"Next, the Shenzhou-12 manned spaceship will dock with the core cabin at the front, and altogether the three sections will form the first linear structure for China's space station," Mu noted.

There were 6.8 tons of supplies onboard the Tianzhou-2, including some 160 parcels of goods and two tons of propellants, according to CAST. "The load to total mass ratio is over 50 percent, indicating its world leading capacity."

The two space suits for the astronauts' outside-cabin activities weigh more than 100 kilograms each, it disclosed.

The Saturday mission also witnessed a substantial improvement in the Tianzhou spacecraft's fast docking capability. Compared to the Tianzhou-1's rendezvous and docking with Tiangong-2 in 2017, which took about two days, it took a mere eight hours to achieve the feat.

Lei Jianyu, deputy director designer of the Tianzhou-2 spacecraft, said that there are only two cargo spaceships in active service in the world that are capable of sending payloads of more than five tons, and Tianzhou is one of them, and has the "world class capability."

The reason behind such progress lies in the fact that all the information for the docking maneuver had been installed in software with the Tianzhou-2, saving the time needed to transfer such instructions from ground tracking and monitoring facilities, which was the case for Tianzhou-1 in executing the same move.

"Such a fast rendezvous and docking process not only shortens the stay of astronauts in the relatively narrow space in the spaceship, saving their energy, but also ensures that the transfer of fresh goods [such as biological agents] is conducted in a timely fashion," CAST developers said.

The Tianzhou-2 adopted a new long-distance guiding technology, as it was able to use the location information provided by the country's BeiDou Navigation Satellites System, or BDS, to automatically navigate itself for the rendezvous and docking with the space station, whereas the Tiangong-1 version needed artificial assistance to lead the craft to approach Tiangong-2 for the move.

In an ideal situation, the time for the rendezvous and docking of Tianzhou-2 would be reduced to some four hours, CAST announced.

In the event of an emergency, this kind of fast rendezvous and docking technology will also facilitate quick responses by providing all kinds of urgently needed materials to the space station and rescue the trapped astronauts, according to the academy.

Yang Sheng, the cargo spacecraft system's chief designer, disclosed that ground logistics technology has also been adopted for the spacecraft. For example, astronauts can obtain the location and further information of specific goods by scanning a QR code, and the inventory information is recorded in a dynamic manner so that astronauts can keep track of changes of goods.

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China is continuously creating legends in space:  

The Long March-5B Y2 rocket, carrying the Tianhe module, blasts off from the Wenchang Spacecraft Launch Site in south China's Hainan Province, April 29, 2021. Photo: Xinhua

The Long March-5B Y2 rocket, carrying the Tianhe module, blasts off from the Wenchang Spacecraft Launch Site in south China's Hainan Province, April 29, 2021. Photo: Xinhua

China on Thursday successfully sent into space Tianhe core module of space station. This marks China's space station construction entering the full implementation stage. It's a crucial step forward for China's manned space program. Hundreds of millions of Chinese people felt inspired by the success.

Building a space station is to build a house in space. The core module is not only the command and control center of the space station, but also lays the foundation for the station. According to the China Manned Space Engineering Office, China will kick off intensive launch missions, including three modules, four cargo spacecraft and four manned spaceships. China is expected to finalize an orbital construction next year. After the "house" is built, our astronauts can move in and start various important space experiments.

It is worth noting that China's space station will operate for at least 10 years, and the International Space Station (ISS) is scheduled to come out of service in 2024. This means, at that time, China's space station would probably be the only one of its kind in space. Sending astronauts in space and building a space station are a dream comes true for Chinese people. When a Chinese astronaut looks at Earth from China's space station, it will represent not only the advancement of China's aerospace technology but also a great breakthrough of Chinese people's vision and imagination.

People know there are unlimited possibilities in outer space, but the threshold of space exploration is extremely high. Without the support of the strong comprehensive national strength and the top-level aerospace technology and research as well as manufacturing capabilities, what China has achieved would never be thinkable. We should be proud of our achievements in the aerospace cause under the West's doubt and isolation. The US once blocked China from participating in the ISS project, and thus pushed China to rapidly develop its own aerospace technology. Today, we are going to have our own space station. This will provide a profound lesson and inspiration to the Chinese people.

Chinese society has had a relatively full understanding of the significance of aerospace technology development. But every time China carries out a major space mission, some voices always emerge saying that as China still faces many difficulties in improving livelihoods, it shouldn't spend so much money on space projects that are hard to reap profits in the short term. This is narrow-minded and shortsighted. For a big country like China, it is destined to conquer space and sea. We cannot talk about China's rise if the country hasn't made breakthroughs in high-end areas such as the aerospace industry. China's livelihood development will also encounter obstacles. In the long run, when the aerospace technology progresses, it is bound to boost China's livelihood.

China's aerospace development started late from a low point, but has achieved outstanding progress in a short period of time. Through the efforts and contributions of several generations of people engaging in the aerospace cause, China has caught up with the world's aerospace powers. From the achievements of "two bombs and one satellite" to the status as an aerospace power, China has displayed Chinese people's national spirit of self-improvement and self-reliance. Without such national spirit, it's unimaginable that China could achieve such aerospace achievements. As long as the spirit exists, China will create a new legend.

Of course, compared with the US and Russia, China still lags behind. But the gap is also a driving force. China should enter space step by step. Mankind's exploration of outer space has just begun. There is infinite space waiting for human beings to explore. From this sense, the narrow-mindedness of Washington is clear as it is racking its brain to engage in geopolitical competition with China.

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China lands on far side of the moon

9,020 COVID-19 Cases Update on 29 May 2021! Malaysia full lockdown from June 1 to 14, essential service sectors open


KUALA LUMPUR, May 29 — The Ministry of Health (MoH) announced that there were a total of 9,020 new cases reported up till 12pm today, pushing the cumulative figure for positive cases in Malaysia to 558,534.

Today marks the highest number of cases recorded in Malaysia!

Top 5 states with the most cases today:

Selangor +2836, Kelantan +907, KL +789, Sarawak +726, Johor +468

(New High in Kelantan and Labuan with 907 cases and 253 cases respectively)

Current recovery rate is at 84.89%

Today Confirmed: 9,020

Total Confirmed: 558,534

Total Recovered: 474,139

Total Deaths: 2,552

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Cornerstone of China’s strategic deterrence against the US: more nuclear missiles and warheads 

 A formation of Dongfeng-41 intercontinental strategic nuclear missiles takes part in a military parade celebrating the 70th anniversary of the founding of the People's Republic of China in Beijing, capital of China, October 1, 2019. Photo: Xinhua
As  the US strategic containment of Chinas has increasingly intensified, I would like to remind again that we have plenty of urgent tasks, but among the most important ones is to rapidly increase the number of commissioned nuclear warheads, and the DF-41s, the strategic missiles that are capable to strike long-range and have high-survivability, in the Chinese arsenal. This is the cornerstone of China's strategic deterrence against the US.

We must be prepared for an intense showdown between China and the US. In that scenario, a large number of Dongfeng-41, and JL-2 and JL-3 (both intercontinental-range submarine-launched ballistic missile) will form the pillar of our strategic will. The number of China's nuclear warheads must reach the quantity that makes US elites shiver should they entertain the idea of engaging in a military confrontation with China.

On this basis, we can calmly and actively manage divergences with Washington to avoid a minor incident sparking a war. US hostility toward China is burning. We must use our strength, and consequences that Washington cannot afford to bear if it takes risky moves, to keep them sober.

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Tuesday, May 25, 2021

Vital to control blood pressure now


Dr Khan Show 4 Tricks to Lower Blood Pressure | How to Control Blood Pressure Fast!

 1 - Carotid Massage 2- Valsalva Maneuver 3- Breathing Technique 4 - Dive Reflex 

 MALAYSIA recorded 6,976 new Covid-19 cases on May 23, the highest number of daily cases reported since the start of the pandemic in March 2020. The number of Covid-19 deaths and severe cases that require intensive care has also increased tremendously.

According to Health Ministry statistics, from May 1 to 21, Malaysia lost 643 people, close to one-third of all Covid-19 deaths in the country since the pandemic started. Within the same period, patients admitted to ICUs increased by 91% (from 337 to 643) and patients requiring ventilation support doubled from 176 to 363.

Covid-19 has negatively impacted the care of patients with noncommunicable diseases such as hypertension and diabetes. Hypertension (high blood pressure) is the most common pre-existing medical condition among Covid-19 patients globally as well as in Malaysia. Patients with hypertension are 95% more likely to require ICU admission and 160% more likely to succumb to the disease. A local study reported that 49% of patients with the severe form of Covid-19 had hypertension, compared with 13% among mild cases. The high prevalence of hypertension in Malaysia – three in every 10 adults have it – means that a substantial proportion of our adult population is at risk.

Adherence to and compliance with medication is crucial. Stop-ping antihypertensive medications could lead to poor blood pressure control, which in turn can result in adverse cardiovascular events such as heart attack, stroke, or kidney failure. All these are linked to poor Covid-19 outcomes.

In addition, once the virus enters the body, it could lead to overactivation of the immune system resulting in a cytokine storm, further burdening a cardiovascular and respiratory system that is already in a suboptimal state. This probably explains why hypertension is the most common comorbidity among Covid-19 patients, especially among those who experience the severe version of the disease.

Maintaining a healthy blood pressure (below 140/90mmHg for systolic and diastolic respectively) is important. Take these steps to control your blood pressure:

> Know your blood pressure levels. Monitor them regularly. This is important to see whether efforts to control the pressure are sufficient or should be improved.

> Limit salt intake in your diet according to daily recommendations. This can be achieved by carefully inspecting food labels for salt and sodium content, avoiding preserved and processed foods, and replacing salt with herbs and spices in cooking.

> Keep your body weight within the normal range. For overweight people, weight loss of 3% to 9% from current body weight has been shown to reduce blood pressure readings by 3mmHg to 6mmHg.

> Exercise consistently. Regular aerobic exercise, such as brisk walking and jogging, for at least 150 minutes a week is recommended as it is beneficial for the cardiovascular system and can help lower blood pressure.

> Quit smoking and avoid alcohol intake as both activities have been shown to increase blood pressure.

> Keep taking your current medications and continue to go for follow-up appointments if you are hypertensive. Be assured that the medications are safe. Do not hesitate to contact your doctor if you are in doubt about your blood pressure control or medications.

Apart from all this, hypertensive patients must seriously follow the current Covid-19 SOP and make every effort to protect yourselves from contracting the disease.


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