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時間:2022-08-16 來源:本站 點擊:258次
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陕西省来年运行高考综合改革 科目设定为“3 1 2”组合******

  陕西将从2022年起运行高考综合性改革创新,在普通高中同歩执行新课程标准教材,2025年全面推行新高考。陕西新高考综合性制度改革依照“3 1 2”方式已报国家教育部办理备案,经国家教育部对陕西省高考综合性改革创新标准确保评定根据后向全社会发展发布,新闻记者认识到,按照早已执行改革创新省区状况看,改革创新后高考全国统考和普通高中学业水平考試同样关键。

  新闻记者认识到,按照全国各地早已执行“3 1 2”方式的高考省区看,高考考試科目设定为“3 1 2”组成方法,即由全国各地统一高考语文课、数学课、外国语3门科目和普通高中学业水平考試3门科目(1门优选科目 2门再挑选科目)构成,满分成750分。

  这在其中,“3”为全国各地统一高考科目语文课、数学课、外国语3门,每门100分均为150分,总成绩450分,每科均以初始分记入考生总成绩。“1”由考生在物理学、历史时间2门优选科目中挑选1门,以初始分记入考生总成绩,满分成100分。“2”由考生在政治思想、自然地理、有机化学、分子生物学4门再挑选科目中挑选2门,以标准分记入考生总成绩,每门100分均为100分。从以上的分配看,推行“3 1 2”方式后,无论是高考全国统考科目的“3”,或是来源于普通高中学业水平考試的“1”和“2”一样关键,考生根据将来专业选择和院校的主要规定,可能发生多种多样挑选考試科目的计划方案。一般状况下,高考全国统考和普通高中学业水平考試会分配在6月当期搭接开展。

  一般高等院校招收根据考生总成绩,参照综合性学生素质评价,推行“学校专业”高考平行志愿归类投挡录用;依照物理学和历史时间归类定编方案、归类划分录取分数线、归类投挡录用;本科自考招收除提前批外,推行同一批号录用。


来源于:三秦都市报。

编写:黎诺万。

Pig kidney works in human patient in 'potential miracle'******

AFP

In this September 25 image courtesy of NYU Langone Health, the surgical team examines the genetically engineered pig kidney for signs of rejection.

A US medical team has succeeded in temporarily attaching a pig's kidney to a person, a transplant breakthrough hailed as a "potential miracle" by the surgeon who led the procedure.

The surgery, carried out on September 25, involved a genetically modified donor animal and a brain-dead patient on a ventilator whose family had given permission for the two-day experiment, for the sake of advancing science.

"It did what it's supposed to do, which is remove waste and make urine," Robert Montgomery, director of the transplant institute at New York University Langone, told AFP.

Critically, the organ was able to reduce the level of the molecule creatinine, a key indicator of kidney health that was elevated in the patient prior to the transplant.

Montgomery carried out the surgery with several colleagues over the course of around two hours.

They joined the kidney to blood vessels on the top of one of the patient's legs, so that they could observe it and take biopsy samples.

The patient had wanted to be an organ donor and their family was initially disappointed when told their loved one's organs were not suitable, said Montgomery.

But "they felt a sense of relief that this was another opportunity for donation," he said. The patient was taken off the ventilator and passed away following the 54-hour test.

AFP

The genetically engineered pig kidney is prepared to allow for urine production.

'Important intermediate step'

Earlier research has shown that kidneys from pigs are viable in nonhuman primates for up to a year, but this was the first time it had been attempted with a human patient.

The donor pig belonged to a herd that had undergone a genetic editing procedure to knock out a gene that produces a particular sugar, which would otherwise have triggered a strong immune response and led to organ rejection.

The editing was performed by biotech firm Revivicor, a subsidiary of United Therapeutics.

"It is still a question what would happen three weeks from now, three months, three years," said Montgomery.

"The only way we're really going to be able to answer that is to move this into a living human trial. But I think this is a really important intermediate step, which tells us that at least initially, things are probably going to be okay."

He plans to submit the findings to a scientific journal in the next month, and says a clinical trial could take place in around a year or two.

The news was welcomed cautiously by outside experts, who nonetheless said they would like to see the peer-reviewed data before drawing firm conclusions.

"This news is a significant scientific achievement in the xenotransplantation field," Hynek Mergental, a surgeon at the University of Birmingham in Britain, said in a statement.

If confirmed, "it would be a major step forward in the organ transplant field that might solve the critical shortage of donor organs," he added.

AFP

A genetically engineered pig kidney is cleaned and prepared for transplant into a person.

Organ shortage

The news comes amid a dire shortage of transplant organs.

According to official US data, there are nearly 107,000 Americans awaiting an organ – 90,000 of whom need a kidney. Seventeen Americans die each day while waiting for an organ.

To meet demand, doctors have long been interested in so-called xenotransplantation, or cross-species organ donation, with experiments tracing back to the 17th century.

Early research focused on harvesting organs from primates – for example, a baboon heart was transplanted into a newborn known as "Baby Fae" in 1984, but she survived only 20 days.

Today, pig heart valves are widely used in humans, and pig skin is grafted on human burn victims.

Pigs make the ideal donors because of their size, their rapid growth and large litters, and the fact they are already raised as a food source, said Montgomery.

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西安为何启动大规模核酸检测?尽快尽早发现感染者防止疫情扩散******

针对本轮疫情,西安市多地已经启动大规模核酸检测。陕西省疾控中心传染病预防控制所所长张义表示,本次西安确诊病例病毒基因测序结果是奥密克戎BA2亚型传染性强,传播速度更快,因此,及时启动大规模核酸检测非常关键。

据介绍,奥密克戎毒株的传染性强,BA2亚型传染力较之前流行的BA1高大约30%,传播速度快。这一点印证了奥密克戎BA2亚型的传染性强特点。

从西安市3月5日凌晨3点报告首例以来,在同航班上已陆续发现4名病例,其中2例已返回外省,疫情发现前,这4例病例存在较长时间、较大范围的社会面活动。比如宾馆、餐厅、医院、市场和地铁、公交车等公共交通工具,密接排查工作有一定的难度,因此,担心有可能漏掉个别接触者。

所以,为了尽快尽早的发现感染者、防止疫情扩散,最大程度保障西安市民的健康安全,经专家组评估认为,有必要在此时开展西安市大规模核酸检测。

另外,张义也提醒市民朋友不要恐慌,目前疫情仍在控制中,所有续发病例皆在我们视线中发病,尚未出现感染来源不明的病例。相信随着各项防控措施的推进,疫情很快会控制住。

华商报记者 李琳


来源:华商网-华商报

编辑:方正

India, UK to launch global solar grid project at COP26******

India and the United Kingdom will launch a project that aims to create a solar grid connecting countries in different parts of the world at the United Nations climate talks in Glasgow, Scotland.。

The project, known as the "Green Grids Initiative," is being initiated by the International Solar Alliance, which was launched by India and France at the 2015 Paris climate conference to promote solar energy. The UK and India agreed to join forces in the initiative in May this year.。

Although solar energy is becoming cheaper than dirtier alternatives, countries cannot rely on it at night and must fall back on fossil fuels that produce earth-warming greenhouse gases. This is especially the case in countries like India, where demand for power is soaring.。

The new project is based on the idea that the sun is always shining in some part of the world, and the project aims to create a global grid that will transfer the sun's power from one place to another, said Ajay Mathur, director general of the International Solar Alliance.。

"For example, when it is dark in east Asia, it's still light in India... If there was a cable between India and east Asia, that solar electricity could be provided to east Asia," he noted.。

The idea of a grid spanning regions is not new, but this is the first attempt to create a global network.。

Mathur said estimates showed that in the next three years, solar power will become as cheap as power from fossil fuels, which will make it easier to build new solar power plants and storage facilities. But even then it will require countries with different priorities to reach complex agreements.。

17家房企联名请求政府:打击恶意维权

1.牛弹琴:特朗普铁粉持枪抗议"抄家" 高喊"解散FBI"

2.逾50万名香港居民接种首剂新冠肺炎疫苗

3.2022年北京近40所学校高考成绩汇总

4.四川山洪亲历者:有人慢悠悠收拾东西被冲走

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