in this paper, we introduce a class of $j$-quasipolar rings. let $r$ be a ring with identity. an element $a$ of a ring $r$ is called {it weakly $j$-quasipolar} if there exists $p^2 = pin comm^2(a)$ such that $a + p$ or $a-p$ are contained in $j(r)$ and the ring $r$ is called {it weakly $j$-quasipolar} if every element of $r$ is weakly $j$-quasipolar. we give many characterizations and investiga...

(i) A 59-year-old Caucasian male presented at the casualty department complaining of pricking in the right eye. Symptoms were caused by a marginal infiltrate and this resolved on conventional therapy. A recurrence one month later also responded well. Each cornea presented an arcus senilis and, in the zone ofstroma affected by the arcus, an additional opacity could be seen. This was identical in...

Russia and China share a discontent with the United States-dominated unipolar world want to establish multipolar international system. They are concerned about West’s attempt expand NATO eastward its security ring around China. has an identity crisis vis-à-vis West is sceptical partnership West. needs modernise defence forces meet of post-Soviet Russia, must lessen external threats. sees as cru...

PURPOSE OF REVIEW To highlight the most important causes of acquired corneal scarring and infiltrates in children. The lack of recognition of these disorders can lead to long-term visual loss in children. RECENT FINDINGS There have been few articles on this topic in the recent ophthalmic literature, but all have stressed the need for early diagnosis and treatment of these diseases. SUMMARY ...

in this paper, we investigate various kinds of extensions of twin-good rings. moreover, we prove that every element of an abelian neat ring r is twin-good if and only if r has no factor ring isomorphic to z2  or z3. the main result of [24] states some conditions that any right self-injective ring r is twin-good. we extend this result to any regular baer ring r by proving that every element of a...

evaluation of changes present in soil and water resources due to operation implement of floodwater spreading is necessary to assess their positive or negative resultant effect. rate of the internal sediment to diversion spreader channels, surface sedimentation and aggregation of the spreading field depth are most important effective attributes on the yield of floodwater spreading systems. these...

Abstract Background Fistulous connections arising between the kidney and colon are rare develop due to multiple aetiologies. We present a case of reno-colic fistula presenting unusually as retroperitoneal psoas abscess managed surgically with good outcome. Case Report A 49-year-old lady presented 5-day history left flank pain swelling no significant surgical or medical history. Physical examina...

Ovarian sex cord-stromal tumors are relatively infrequent neoplasms that account for approximately 8% of all primary ovarian neoplasm. Sex cord-stromal tumors of the ovary include granulosa cell tumors, fibrothecomas, Sertoli-Leydigcell tumors, steroid cell tumors, and sclerosing stromal tumors (SST). Sclerosing stromal tumors account for 2% to 6% of ovarian stromal tumors. Despite the rarity o...

Human mesenchymal stem cells (hMSCs) localized to bone marrow, nonhematopoietic organs, as well as perivascular niches are postulated to traffic through type I collagen-rich stromal tissues to first infiltrate sites of tissue damage, inflammation, or neoplasia and then differentiate. Nevertheless, the molecular mechanisms supporting the ability of hMSCs to remodel 3-dimensional (3D) collagenous...