FEMALE PEASANTS AND THE ALTERNATIVE AGRI-FOOD MOVEMENT IN SOUTH KOREA: AGROECOLOGY AND THE KOREAN WOMEN PEASANT ASSOCIATION MOVEMENT

This paper examines the current state and socio-ecological implications of the alternative agri-food movement organized by the Korean Women Peasant Association (KWPA) in South Korea. In the process of rapid industrial development, South Korean farm sector has suffered from serious environmental problems, depopulation, and poverty. Food production itself has become mostly industrialized using abundant amount of chemical input. This, along with mass consumption system relying on large supermarkets, has led to an unsustainable food system. In this situation, there has been a rise of alternative agri-food movement by the KWPA. We have focused on the influence of agroecology in the KWPA’s activities, which might bring about a more sustainable food system. Under the dominant paradigm of agro-industrialism, farm production inevitably depends on outside resources. This de-contextualizes and disconnects farming from local ecosystems and social relations. Agroecology has emerged in recent years as an alternative paradigm, which can reconnect farming, nature, and society. We have analyzed the KWPA’s programs, such as the indigenous seed preservation movement (ISPM) and Sisters’ Garden Plot (SGP). We have found that agroecology plays an important role in the KWPA’s programs, which involve sharing indigenous farm knowledge; preserving and finding indigenous seeds; and providing seasonal, local, and organic food to the public. These activities have also led to the empowerment of female peasants. These as a whole could be important social resource for a transition to a more sustainable food system

Multifunctional Inverted Nanocone Arrays for Non-Wetting, Self-Cleaning Transparent Surface with High Mechanical Robustness

A multifunctional surface that enables control of wetting, optical reflectivity and mechanical damage of nanostructured interfaces is presented. Our approach is based on imprinting a periodic array of nanosized cones into a UV-curable polyurethane acrylate (PUA), resulting in a self-reinforcing egg-crate topography evenly distributed over large areas up to several cm[superscript 2] in size. The resulting surfaces can be either superhydrophilic or superhydrophobic (through subsequent application of an appropriate chemical coating), they minimize optical reflection losses over a broad range of wavelengths and a wide range of angles of incidence, and they also have enhanced mechanical resilience due to greatly improved redistribution of the normal and shearing mechanical loads. The transmissivity and wetting characteristics of the nanoscale egg-crate structure, as well as its resistance to mechanical deformation are analyzed theoretically. Experiments show that the optical performance together with self-cleaning or anti-fogging behavior of the inverted nanocone topography is comparable to earlier designs that have used periodic arrays of nanocones to control reflection and wetting. However the egg-crate structures are far superior in terms of mechanical robustness, and the ability to replicate this topography through several generations is promising for large-scale commercial applications where multifunctionality is important.Massachusetts Institute of Technology. Institute for Soldier NanotechnologiesSingapore-MIT Alliance for Research and Technology (Singapore. National Research Foundation)Samsung (Firm)Kwanjeong Educational Foundation (Korea) (Scholarship

KITENIN increases invasion and migration of mouse squamous cancer cells and promotes pulmonary metastasis in a mouse squamous tumor model

AbstractKAI1 C-terminal interacting tetraspanin (KITENIN) is reported to promote metastasis in mouse colon cancer models. We investigated the role of KITENIN on the progression of squamous cell carcinoma (SCC). In a preliminary clinical study using resected tissues from head and neck SCC patients, KITENIN was highly expressed in tumors and metastatic lymph nodes, while KAI1 was more increased in adjacent mucosa than in tumor. KITENIN-transfected mouse squamous cancer (SCC VII/KITENIN) cells showed significantly higher invasion, migration, and proliferation than empty vector-transfected cells. In syngeneic mouse squamous tumor models, more increased tumor volume and enhanced lung metastasis were found in SCC VII/KITENIN cells-injected mice. Thus, KITENIN increases invasion and migration of squamous cancer cells and thereby promotes distant metastasis in mouse squamous tumor models

Usefulness of Oncoplastic Volume Replacement Techniques after Breast Conserving Surgery in Small to Moderate-sized Breasts

BackgroundIn Korean women, many of whom have small to moderate-sized breasts, it is difficult to cover a partial breast defect using oncoplastic volume displacement techniques after removal of an adequate volume of tissue during oncologic surgery. In such cases, oncoplastic volume replacement techniques are more useful.MethodsFrom January 2007 to December 2011, 104 women underwent a total of 107 breast-conserving surgeries with various kinds of oncoplastic volume replacement techniques. We used latissimus dorsi (LD) myocutaneous flap for cases in which the resection mass was greater than 150 g. In case with a resection mass less than 150 g, we used regional flaps such as a lateral thoracodorsal flap, a thoracoepigastric flap, or perforator flaps such as an intercostal artery perforator (ICAP) flap or a thoracodorsal artery perforator (TDAP) flap.ResultsThe mean age was 46.1 years, and the average follow-up interval was 10.3 months. The patients underwent oncoplastic volume replacement techniques with a lateral thoracodorsal flap (n=9), thoracoepigastric flap (n=7), ICAP flap (n=25), TDAP flap (n=12), and LD flap (n=54). There was one case of congestion in an LD flap, and two cases of fat necrosis in an ICAP flap. Most of the patients were satisfied with the cosmetic results.ConclusionsOncoplastic volume replacement techniques can be reliable and useful for the correction of breast deformity after breast-conserving surgery, especially in patients with small to moderate-sized breasts

The Outcomes of Hypertransfusion in Major ABO Incompatible Allogeneic Stem Cell Transplantation

Major ABO incompatibility may be potentially associated with immediate or delayed hemolysis and delayed onset of erythropoiesis in patients receiving allogeneic hematopoietic stem cell transplantation (HSCT). To determine if hemolysis can be prevented by the inhibition of graft erythropoiesis, we performed hypertransfusion and assessed red cell transfusion requirement and independence. Between October 1995 and December 2001, 28 consecutive patients receiving major ABO incompatible HSCT at Samsung Medical Center were hypertransfused to maintain their hemoglobin levels at 15 g/dL or more. We retrospectively compared the outcomes of these patients with those of 47 patients at Asan Medical Center whose target hemoglobin levels were 10 g/dL. Reticulocyte engraftment was significantly delayed in hypertransfused group (51 days vs. 23 days; p=.001). There was no significant difference in the total amount of red cells transfused within 90 days post-HSCT (25 units vs. 26 units; p=.631). No significant difference in the time to red cell transfusion independence was observed between the two groups (63 days vs. 56 days; p=.165). In conclusion, we failed to improve red cell transfusion requirement and independence in major ABO incompatible HSCT with hypertransfusion