2 1 century is from 200 11October1to 21001February 3 1. When used to calculate the date, the century usually starts from the year divisible by 100 or later, such as 2000 or 200 1. This odd-numbered chronology comes from after the era of Jesus, in which 1 usually means "the year of our Lord", so the first century was from 1 to 100, while the twentieth century was from 190 1 to 2000, so it was 200/kloc.
2 1 century 10 year is from 2000 to 20 10 year. 265438+ 10 years before the 20th century can be called 265438+ 10 years in the 20th century, or 265438+at the beginning of the 20th century. Century refers to the unit for calculating age. A century is a hundred years, which usually means a hundred years in a row.
The word "time" divides a century into successive decades, which usually applies to the first year of the public. The decade from "zero" to "nine" in each century, such as 1990- 1999, is 1990.
2 1 century China's important medical achievements in 2022.
On April 7th, 2022, China Academy of Medical Sciences released the important medical achievements of China in the 20th century.
* * * Four medical achievements were selected, namely "Basic Research and Clinical Transformation of Langerhans Cell Biological Function", "Establishment, Implementation and Guidance of Medical Quality Management and Control System of Chinese Journal of Blood Purification", "Molecular Genetic Research and Clinical Application of Spinal Malformation" and "Revealing the genetic and epigenetic regulation of human germ cells and embryo development for the first time, and giving birth to the world's first test-tube baby with single-gene genetic disease and chromosome abnormality screening in high-throughput sequencing".
Among them, "the basic research and clinical transformation of Langerhans cell biological function" has significantly promoted the development of immunology, provided a theoretical basis for organ transplantation and the treatment of infectious skin diseases, and is an important breakthrough in the field of immunology, opening up a new direction for the treatment of tumors and viral infectious diseases.
The achievement of "Establishment, Implementation and Guidance of chinese journal of blood purification Magazine's Medical Quality Management and Control System" initiated the medical quality management system of chinese journal of blood purification Magazine, formulated the national blood purification industry standard, led and implemented the medical quality control of chinese journal of blood purification Magazine, promoted the innovative development of chinese journal of blood purification Magazine, and reached the international leading level.
"Molecular Genetic Research and Clinical Application of Spinal Malformation" has realized the "early screening" and "early diagnosis" of scoliosis patients in China, which marks the successful landing of the first gene counseling clinic model of skeletal malformation in China from molecular genetic research to clinical application, and significantly promotes the standardization and homogenization of screening, prevention, diagnosis and treatment of spinal deformity in China.
The achievement of "revealing the genetic and epigenetic regulation of human germ cells and embryo development for the first time, and giving birth to the world's first test-tube baby with single-gene genetic disease and chromosome abnormality screening in high-throughput sequencing" has improved the treatment success rate of patients with difficult infertility, overcome the major reproductive health problem of "birth defect", made the gene diagnosis technology before embryo implantation in China reach the world leading level, vigorously promoted prenatal and postnatal care in China, and made important contributions to improving women's fertility, preventing and treating hereditary birth defects and developing reproductive health scientific research in China.