Devices to prevent pollution by backflow of potable water. Hose Union anti-vacuum valves. DN 15 to DN 25 inclusive Family H, type B and type D. General technical specification

Abstract BACKGROUND According to EANO-ESMO clinical practice guidelines, the MRI findings of LM are divided into 4 types, namely linear enhancement (type A), nodular enhancement (type B), linear combined with nodular enhancement (type C), and sign of hydrocephalus (type D). METHODS The MRI features of brain and spinal cord in patients diagnosed with NSCLC-LM in Guangdong Sanjiu Brain Hospital from 2010 until 2019 were investigated, and then were classified into 4 types. The imaging features were analyzed. RESULTS A total of 80 patients were enrolled in the study. The median age of the patients was 53.5 years old, and the median time from the initial diagnosis to the confirmed diagnosis of LM was 11.6 months. The results of enhanced MRI examination of the brain in 79 cases showed that the number of cases with enhancements of type A, B, C and D were 50 (63.3%), 0, 26 (32.9%) and 3 (3.8%), respectively, and that LM with metastases to the brain parenchyma was found in 42 cases (53.2%). The results of enhanced MRI examination of spinal cord in 59 cases showed that there were only enhancements of type A and C in 40 cases (67.8%) and 3 cases (5.0%), and no enhancement sign in the other 16 cases (27.2%). CONCLUSION MRI examination of brain and spinal cord will improve the detection rate of LM. The MRI features of NSCLC-LM in real world are mainly characterized by the linear enhancements of brain and spinal cord, followed by linear combined with nodular enhancement. The enhancements of type B and type D are rare in clinic. Almost half of the patients have LM and metastases to the brain parenchyma. Therefore, the differentiation of tumor metastases is needed to be paid attention to for the early diagnosis and the formulation of reasonable treatment plans.

Download Full-text

The effectiveness of TiO2 additions to mortar to maintain initial conditions in terms of its reflectance to solar radiation

Ambiente Construído ◽

10.1590/s1678-86212017000300161 ◽

2017 ◽

Vol 17 (3) ◽

pp. 39-56 ◽

Cited By ~ 3

Author(s):

Sérgio Roberto Andrade Dantas ◽

Fulvio Vittorino ◽

Kai Loh

Keyword(s):

Solar Radiation ◽

Ultraviolet Radiation ◽

Initial Conditions ◽

Type A ◽

Just Noticeable Difference ◽

Type B ◽

Climate Conditions ◽

Type D ◽

Type C ◽

Over Time

Abstract Contact of facades with degradation agents and direct incidence of ultraviolet radiation on external coatings make them more opaque over time, affecting their colour and reflectance characteristics. This study evaluated the effect of adding different TiO2 contents to mortars applied in concrete substrates in order to verify the reflectance maintenance on surfaces after exposure over time. Mortar with different concentrations of TiO2 (1%, 5%, 10%) were produced in relation to the total dry premix, added as a powder and compared to unpainted mortar without TiO2 (type "A") and painted mortar without TiO2 (type "B"), both used as a reference for colour and reflectance. Exposed over 16 months to climate conditions in São Paulo, regarding the maintenance of reflectance and solar radiation, the results showed that type "B" (0%TiO2) painted mortar presented the best performance. Type "C" (1%TiO2) and type "D" (5%TiO2) unpainted mortar remained more stable. Type "A" (0%TiO2) and type "E" (10%TiO2) unpainted mortar showed greater differences according to the Just Noticeable Difference (JND) range caused by dirt pick up.

Download Full-text

Gamma Positivity of the Descent Based Eulerian Polynomial in Positive Elements of Classical Weyl Groups

The Electronic Journal of Combinatorics ◽

10.37236/9037 ◽

2020 ◽

Vol 27 (3) ◽

Cited By ~ 1

Author(s):

Hiranya Kishore Dey ◽

Sivaramakrishnan Sivasubramanian

Keyword(s):

Coxeter Groups ◽

Weyl Groups ◽

Alternating Group ◽

Type B ◽

Eulerian Polynomial ◽

Eulerian Polynomials ◽

Type D ◽

Positive Elements

The Eulerian polynomial $A_n(t)$ enumerating descents in $\mathfrak{S}_n$ is known to be gamma positive for all $n$. When enumeration is done over the type B and type D Coxeter groups, the type B and type D Eulerian polynomials are also known to be gamma positive for all $n$. We consider $A_n^+(t)$ and $A_n^-(t)$, the polynomials which enumerate descents in the alternating group $\mathcal{A}_n$ and in $\mathfrak{S}_n - \mathcal{A}_n$ respectively. We show the following results about $A_n^+(t)$ and $A_n^-(t)$: both polynomials are gamma positive iff $n \equiv 0,1$ (mod 4). When $n \equiv 2,3$ (mod 4), both polynomials are not palindromic. When $n \equiv 2$ (mod 4), we show that {\sl two} gamma positive summands add up to give $A_n^+(t)$ and $A_n^-(t)$. When $n \equiv 3$ (mod 4), we show that {\sl three} gamma positive summands add up to give both $A_n^+(t)$ and $A_n^-(t)$. We show similar gamma positivity results about the descent based type B and type D Eulerian polynomials when enumeration is done over the positive elements in the respective Coxeter groups. We also show that the polynomials considered in this work are unimodal.

Download Full-text

IN VITRO PRODUCTION OF NEW TYPES OF HEMOPHILUS INFLUENZAE

Journal of Experimental Medicine ◽

10.1084/jem.97.4.467 ◽

1953 ◽

Vol 97 (4) ◽

pp. 467-482 ◽

Cited By ~ 22

Author(s):

Grace Leidy ◽

Eros Hahn ◽

Hattie E. Alexander

Keyword(s):

B Cells ◽

Living Cells ◽

Type B ◽

In Vitro Production ◽

Genetic Traits ◽

Hemophilus Influenzae ◽

Type D ◽

Rd Cells ◽

Vitro Production

Two new types of Hemophilus influenzae, Sab and Sad have been produced in vitro. Each exhibits the presence of the type specific polysaccharides of 2 types of E. influenzae within the same cell. In Sab the polysaccharides of types a and b have been demonstrated and in Sad those which characterize types a and d. The Sab and Sad traits are inherited. Sab was produced by the action of DNA-containing extract isolated from type a on either type b cells or Rb cells (non-encapsulated non-type-specific cells derived from type b). Sad cells were formed as a result of the action of the DNA-containing extract isolated from type d on cells intermediate between Rab and Sab cells. DNA-containing extracts isolated from Sab cells have induced the Sab trait in Rd cells with predictable regularity. Evidence has been presented that the hereditary determinant of Sab cells is a new genetic substance with new functions. Therefore, the interaction of the DNA-containing substance from cells of one genetic type with living cells of a genetically different type has produced what appears to be a new individual which differs from each of the cells contributing the differing genetic traits but has at least one trait in common with each. Sab cells derived presumably from a single cell show the appearance of type b cells sometime during the first 7 generations.

Download Full-text