Plant disease rapid diagnosis instrument applied in plant disease diagnosis
Hinged NON-Welded Bow Spring Centralizers
API Hinged Non Welded Constructed Centralizer for Casing
3. Application Spiral Roller Centralizer,Aluminum Rigid Centralizer,Centralizer for Oilfield,Positive Centralizer Puyang Junhong Rubber Co., Ltd. , https://www.pyjhxs.com
In recent years, with the extensive application of molecular biology techniques in the development of biological systems and other fields, there have been increasing reports on the application of PCR-based molecular biology techniques in the detection and identification of plant pathogens.
In the research and application of phytopathogenic fungi, the phylogenetic study of the predatory nematode fungus Arthrobacter spp. was carried out by PCR-RFLP method, which basically reflected the genetic relationship among different species in the genus, and proved the morphology of the Arthrobacter spp. from the molecular level. The rationality of the classification, while raising the doubts about the expansion of the genus sign; PCR amplification of the ITS region of the ribosomal genes of cotton blight bacteria, Phytophthora capsici, and the product was cloned and sequence comparison; Cooke et al. The ITS sequences of 16 species of Phytophthora ribosomes showed that there were abundant interspecies variation among different species of Phytophthora, while the sequences of different strains of the same species were highly conserved. According to the sequence analysis of ITS, the phylogenetic trends of Phytophthora oomycetes were proposed. .
In a word, the rapid diagnosis instrument for ribosomal gene ITS region has become more and more widely used in the diagnosis of various plant diseases. Based on the sequence differences of rDNAITS, various plant pathogens have been identified, providing reliable and early diagnosis of plant diseases. The basis for the future classification and molecular epidemiological investigation and other more in-depth research work laid the foundation for the prevention and control of plant diseases is also of great significance, but also to further identify the source of crop disease resistance, auxiliary crop disease resistance breeding.
1. Type: Hinged Non-welded Bow Spring
2. Materials: Spring Steel
Tubing or casing applications
Vertical and deviated wells
Wells where rotation capabilities are not required
Cased and open holes
4. Features, Advantages, and Benefits
1) High-performance bows provide maximum standoff in multiple locations of the annulus, which provides optimal conditions for primary cementing to achieve zonal isolation.
2) All common centralizer sizes have been tested and validated to meet API Specification 10D for providing reliability and durability during operations.
3) The nonwelded design can withstand most wellbore environments, which provides operational flexibility.
4) Locking tabs secure the high-quality, spring-steel bows to the hinged collars, which bear the load force of the centralizer for reliable downhole performance.
5) Bow configurations are available in various heights and sizes suitable for most applications.
6) Bows and hinged collars are stocked at most Weatherford service locations, so the centralizers can be assembled to specifications quickly.