The model prediction in the ¼ keV band, though largely uncertain, qualitatively shows large intensity and spectral variations of the corona contribution across the sky. The same model also explains well the 1.5 keV band background. The electron density and temperature of the corona near the Sun are ~ 1.1 × 10 −3 cm −3 and ~ 1.7 × 10 6 K. The global distribution of the background, outside these regions, is well characterized by the model the 1 σ relative dispersion of the data from the model is ~ 15%. Regions where the data deviate significantly from the model represent predominantly the Galactic disk and individual nearby hot superbubbles. The model accounts for X-ray absorption, and is constrained iteratively with the ROSAT all-sky X-ray survey data. The corona is assumed to be approximately polytropic (index = 5/3) and hydrostatic in the gravitational potential of the Galaxy. Please do not send your purchase back to us unless we authorise you to do so.I characterize the global distribution of the ¾ keV band background with a simple model of the hot Galactic corona, plus an isotropic extragalactic background. You must contact us first and we will guide you through the steps. If for any reason you would like to exchange your product, perhaps for a different size in clothing. If you are approved for a refund, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within 14 days. You can do it by sending a message on Contact Us page *You can submit refund requests within 15 days after the guaranteed period for delivery (45 days) has expired. Other exceptional circumstances outside the control of.not cleared by customs, delayed by a natural disaster). Your order did not arrive due to exceptional circumstances outside the control of Ichiban Electronic (i.e.Your order did not arrive due to factors within your control (i.e.If you do not want the product you’ve received you may request a refund but you must return the item at your expense and the item must be unused. If you received the wrong item you can request a refund or a reshipment. If you did not receive the product within the guaranteed time( 45 days not including 2-5 day processing) you can request a refund or a reshipment. Therefore, if you’d like a refund you can request one no matter the reason. ![]() Once the packaging and shipping process has started, it can no longer be cancelled. If your order has been paid and you need to make a change or cancel an order, you must contact us within 12 hours. REFUNDS & RETURNS POLICY Order cancellationĪll orders can be cancelled until they are shipped. ![]() If you have any other questions, please contact us and we will do our best to help you out. Will my items be sent in one package?įor logistical reasons, items in the same purchase will sometimes be sent in separate packages, even if you've specified combined shipping. If your order was placed more than 5 business days ago and there is still no information on your tracking number, please contact us. My tracking says “no information available at the moment”.įor some shipping companies, it takes 2-5 business days for the tracking information to update on the system. If you haven’t received tracking info within 5 days, please contact us. Commonly they are divided into protrusion vs extrusion: protrusion base wider than herniation confined to disc level outer annular fibres intact extrusion base (a.k.a. Yes, you will receive an email once your order ships that contains your tracking information. Disc herniations can be divided into groups in a variety of ways. *This doesn’t include our 2-5 day processing time. ![]() By purchasing our products, you consent that one or more packages may be shipped to you and may get custom fees when they arrive to your country. We are not responsible for any custom fees once the items have shipped. If you happen to be located in one of those countries we will contact you. However, there are some locations we are unable to ship to. We provide free shipping to over 200 countries around the world. Packages from our warehouse in China will be shipped by ePacket or EMS depending on the weight and size of the product. Packages shipped from our Singapore warehouse are shipped through DHL. We will continue to grow to meet the needs of all our customers, delivering a service beyond all expectation anywhere in the world. Nothing means more to us than bringing our customers great value and service. We are proud to offer international shipping services that currently operate in over 200 countries and islands world wide.
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