Abstract: Methods, systems and computer program products are disclosed for identifying a message deliverability problem. In an example system, a source email server divides a plurality of email messages intended for delivery to destination devices using at least two source IP addresses into at least two groups of messages. The source email server outputs each email message in one of the groups through a same one of the source IP addresses and outputs each email message in another one of the groups through a different one of the source IP addresses. Each of the email messages is configured to trigger a response that includes the source IP address of the email message in response to a user opening the email message and/or selecting a hyperlink within the email message. A deliverability analysis module identifies an email message deliverability problem associated with one of the source IP addresses in response to a comparison of the responses across the source IP addresses.

Abstract: An improved reactor comprises primary channels connected by secondary channels. Primary and secondary channels are of orientations and dimensions as to cause fluid to flow through the primary and secondary channels. Catalyst may be coated on the inside of the secondary channels.

Abstract: A process for melting an aluminum charge into molten aluminum and simultaneously refining the molten aluminum to produce a refined molten aluminum having a low hydrogen content in a direct fired furnace (10) is provided.

Abstract: A method and an apparatus for controlling the operation of a digital processing system. In one example of a method of the invention, a first status indicator is received for a first software program which is executing on the digital processing system, and it is determined whether the first software program is in a first state. In response to determining that the first software program is not in the first state, then a first predetermined function is performed. In one embodiment, several additional status indicators may be received, one for each of several software programs which are executing on the system. For each additional status indicator, it is determined whether the corresponding software program is in the first state, and if it is not in the first state, then a corresponding, predetermined function is performed, such as (for example) relaunching the corresponding software.

Abstract: Three-dimensional, reconfigurable playthings or blocks may be interconnected in a myriad of designs. A plurality of generally flat blocks of substantially uniform thickness in varying geometric outlines and contours are interconnected through the utilization of defined notches in one or more sides of any of the blocks to be configured. Generally, the notch is substantially equal to the thickness of the various blocks so that they may be interconnected in an orthogonal fashion. Additionally, the blocks, through the utilization of the notch, may be configured in a generally cantilevered fashion through the use of two or more points for contact friction fitting. Use of flexible materials enhances the safety of the blocks in an environment of a children's toy, and additional embodiments utilizing ribbed notches further enhance the interconnection of the blocks to allow additional exercise of imagination in configuring designs.